"Overview : Free-Space Optical Communications at JPL/NASA," Hamid Hemmati, March 2003.

"Overview of Laser Communication Research at JPL," Hamid Hemmati. Proc. SPIE Vol. 4273, The Search for Extraterrestrial Intelligence (SETI) in the Optical Spectrum III, August, 2001.

"Comparative Study of Optical and Radio-Frequency Communication Systems for a Deep-Space Mission," H. Hemmati, K. Wilson, M. Sue, L. Harcke, M. Wilhlem, C. Chen, J. R. Lesh, Y. Feria, D. Rascoe, F. Lansing, and J. Layland. TDA Progress Report 42-128, February, 1997.

"Comparative Study of Optical and RF Communication Systems for a Mars Mission, Part 1" H. Hemmati, K. Wilson, M. Sue, D. Rascoe, F. Lansing, M. Wilhelm, L. Harcke, and C. Chen. Proc. SPIE Vol. 2669, Free-Space Laser Communication Technologies VIII, April, 1996 (links to Abstract).

"Comparative Study of Optical and RF Communication Systems for a Mars Mission, Part 2" H. Hemmati, J. Layland, J. Lesh, K. Wilson, M. Sue, D. Rascoe, F. Lansing, M. Wilhelm, L. Harcke, C. Chen, Y. Feria. Proc. SPIE Vol. 2990, Free-Space Laser Communication Technologies IX, May, 1997 (links to Abstract).

"Atmosphere Tolerant Acquisition," S. Lee, G. G. Ortiz, Free-Space Laser Communications Technologies XV, Proceedings of the SPIE Vol. 4975, pp. 34-44 (2003).

"Atmosphere Tolerant Acquisition," S. Lee, G. G. Ortiz, Free-Space Laser Communications Technologies XV, SPIE conference, presentation (2003).

"Advanced ATP Concepts and Design for High Data Rate LEO-GEO Optcomm Transceiver," S. Lee, G. G. Ortiz, Free-Space Laser Communications Technologies XV, SPIE conference, presentation (2003).

"Characterization of the Random-Access-Windowing CCD Camera for Optical Comm ATP Subsystem," W. Farr, B. Liu, S. Monacos, Free-Space Laser Communications Technologies XV, SPIE conference, presentation (2003).

"Design of an event-driven random-access-windowing CCD-based camera," S. P. Monacos, R. K. Lam, A. A. Portillo, G. G. Ortiz, Free-Space Laser Communications Technologies XV, Proceedings of the SPIE Vol. 4975, pp. 115-125 (2003).

"Design of an event-driven randomaccess- windowing CCD-based camera," S.P. Monacos, R. K. Lam, A. A. Portillo, G. G. Ortiz," Free-Space Laser Communications Technologies XV, SPIE conference, presentation (2003).

"Design and development of a robust ATP subsystem for the Altair UAV-to-Ground Lasercomm 2.5 Gbps Demonstration," G. G. Ortiz, S. Lee, S. Monacos, M. Wright and A. Biswas, Free-Space Laser Communications Technologies XV, Proceedings of the SPIE Vol. 4975, pp. 103-114 (2003).

"Laboratory demonstration of the Submicroradian ATP Subsystem for deep space optical communications," G. G. Ortiz, S. Lee, W. Liu, W. Farr, V. Garkanian, Free-Space Laser Communications Technologies XV, SPIE conference, presentation (2003).

"Sub-microradian Pointing for Deep Space Optical Telecommunications Network," G. G. Ortiz, S. Lee, and J. W. Alexander,19th AIAA International Communications Satellite Systems Conference, Toulouse, France (2001).

"Functional Demonstration of Accelerometer-assisted Beacon Tracking," G. Ortiz, A. Portillo, S. Lee, J. Ceniceros, Free-Space Laser Communications Technology XIII, Proceedings SPIE, Vol. 4272 (2001).

"A High Frame Rate CCD Camera with Region-of-Interest Capability," S. P. Monacos, A. A. Portillo, W. Liu, J. W. Alexander, G. G. Ortiz, Accepted for publication in 2001 IEEE Aerospace Conference, Big Sky, Montana (2001).

"Accelerometer-Assisted Tracking and Pointing for Deep Space Optical Communications: Concept, Analysis, and Implementations," S. Lee, G. G. Ortiz, J. W. Alexander, Accepted for publication in 2001 IEEE Aerospace Conference Proceedings, Big Sky, Montana, (2001).

"Fine Pointing Control for Optical Communications," A. Portillo, G. G. Ortiz, and C. Racho, Accepted for publication in 2001 IEEE Aerospace Conference Proceedings, Big Sky, Montana (2001).

"Functional demonstration of accelerometer-assisted beacon tracking," G. G. Ortiz, A. Portillo, S. Lee, and Juan Ceniceros, in Free-Space Laser Communication Technologies XIII, Proceedings of SPIE Vol. 4272, pp. 112-117 (2001).

"Sub-microradian Pointing System Design for Deep-Space Optical Communications," S. Lee, J. W. Alexander, and G. G. Ortiz, in Free-Space Laser Communication Technologies XIII, Proceedings of SPIE Vol. 4272, pp. 104-111 (2001).

"Vibration Platform Testbed for Deep Space Acquisition, Tracking and Pointing," J. C. Ceniceros, C. D. Jeppesen, and G. G. Ortiz, in Free-Space Laser Communication Technologies XIII, Proceedings of SPIE Vol. 4272, pp. 209-218 (2001).

"Near Earth Optical Acquisition and Communication Exploration," B. Sanii and D. Jackson, OCG Progress Report 2000-02 (2000).

"Accelerometer-Assisted Tracking and Pointing for Deep Space Optical Communications," S. Lee, J. W. Alexander, G. G. Ortiz, and C.C. Chen, OCG Progress Report 2000-01 (2000).

"Pointing and tracking subsystem design for optical communications link between the International Space Station and Ground," S. Lee, J. W. Alexander, M. Jeganathan in Free-Space Laser Communication Technologies XII, Proceedings of SPIE Vol. 3932, pp. 150-157 (2000).

"Deep Space Acquisition, Tracking and Pointing Technologies for Optical Communications," S. Lee, J. W. Alexander, G. G. Ortiz, in Deep Space Communications Technologies, Kul Bhasin, Chair, Proceedings of the 1999 International Symposium on Space Communications and Navigation Technologies, Pasadena, CA (1999).

"Maximum Likelihood Based Extended-Source Spatial Acquisition and Tracking for Planetary Optical Communications," H. Tsou, T. Yan, Jet Propulsion Lab. [3615-23], presented at SPIE Photonics West, San Jose, CA. January 1999.

"Precision Beam Pointing for Laser Communication System Using a CCD-Based Tracker," Chen, C.C., H. Ansari, and J. R. Lesh, Proceedings of SPIE OE/Aerospace Sensing '93 paper # 1949-15, Orlando, FL, April 1993.

"Application of Laser Guide Star Technology to Space-to-Ground Optical Communications Systems," Chien, C.C., and Lesh, J. R., presented at the Laser guide star Adaptive Optics Workshop, Phillips Laboratory, Kirtland AFB, Albuquerque, NM, March 10-12, 1992.

"A Plan for the Development and Demonstration of Optical Communications for Deep Space," Lesh, J. R., Deutsch, L. D. and Weber, W. J., Proceedings of Optical Communications II Conference at Lasers'91, Munich, Germany, June 10-12, 1991.

"Effect of Earth Albedo Variation on the Performance of a Spatial Acquisition Subsystem Aboard a Planetary Spacecraft," Chen, C., TDA Progress Report 42-95, Jet Propulsion Laboratory, Pasadena, CA, pp. 202-211, November 1988.

View OCD components poster

View OCD I and OCD II comparison table

"Optical Communications Demonstrator (OCD) Status," M. Jeganathan, S. Monacos. Proc. SPIE Vol 2990, Free-Space Laser Communication Technologies IX, May, 1997.

"Overview of the Preliminary Design of the Optical Communication Demonstration and High-Rate Link Facility," J. V. Sandusky, M. Jeganathan, G. G. Ortiz, A. Biswas, S. Lee, G. Parker, B. Liu, D. Johnson, J. R. Lesh, Jet Propulsion Lab. [3615-19], presented at SPIE Photonics West, San Jose, CA, January, 1999.

"Lessons Learned from the Optical Communication Demonstrator," M. Jeganathan, A. Portillo, S. Monacos, J. De Pew, D. Erickson. [3615-03], presented at SPIE Photonics West, San Jose, CA, January, 1999.

"Characterization and Design of Digital Pointing Subsystem for Optical Communications Demonstrator," C. S. Racho, A. Portillo. [3615-28], presented at SPIE Photonics West, San Jose, CA, January, 1999.

"Performance analysis and electronics packaging of the Optical Communications Demonstrator (OCD)," M. Jeganathan, S. Monacos . Free-space Laser Communications Technologies X, Proceedings of SPIE -- The International Society for Optical Engineering, 3266 (1998).

"Progress on the development of the Optical Communication Demonstrator," T.Y. Yan, M. Jeganath, D. Erickson, J. Lesh, SPIE Conference Proceedings, Vol. 2990, 1997.

"Overview of the Optical Communications Demonstrator," Chen, C.C., H. Ansari, and J. R. Lesh. Proceedings of SPIE OE/Lase 94, paper 2123 09, Volume 2123, January 1994.

"High rate of delivery of AirSAR Data using an in-flight free space optical communications link," M. Wright, A. Biswas, K. Wilson, H. Hemmati, Annual Workshop for AirSAR Users, Pasadena, CA (2002).

"Technology Maturation for Multi-Gigabit/sec Optical Communications Transceiver for Earth Science," G. G. Ortiz, S. Lee and H. Hemmati, NASA's Earth Science and Technology Conference, Pasadena, CA. (June 11, 2002).

"Multi-Gigabit Data-rate Optical Communication Depicting LEO-to-GEO and GEO-to-Ground Links," H. Hemmati, M. Wright, B. Sanii, N. Page, G. Ortiz, A. Biswas, K. Wilson Proc. SPIE Vol. 4635, Free-Space Laser Communication Technologies XIV, April 2002, pp. 295-301.

"10 Gbps Shuttle-to-Ground Adjunct Communications Link Capability Experiment," G. G. Ortiz, Shuttle Small Payloads Project Office Symposium Annapolis, MD. (1999).

"Cavity-Dumped Communication Laser Design," W. T. Roberts, IPN Progress Report 42-152, February 15, 2003.

"Performance trades for long-haul communication in deep space," J.C Breidenthal, S. A. Townes, Space Operations Conference (2002).

"Approaches for efficient coupling of lasers to telescopes with secondary mirror and baffles obscuration," H. Hemmati, N. Page. Proc. SPIE Vol. 4635, Free-Space Laser Communication Technologies XIV, pp. 288-294, (2002).

"High efficiency pulsed laser transmitters for deep space optical communications," H. Hemmati, M. Wright, A. Biswas, C. Esproles, Proceedings of SPIE Vol. 3932, Free-Space Laser Communication Technology XII, (2000).

"High data-rate laser transmitters for free space laser communications," A. Biswas, H. Hemmati, J. R. Lesh, Presented at Photonics West (1999).

"System requirements for a deep-space optical transceiver," C. C. Chen, J. W. Alexander, H. Hemmati, S. Monacos, T. Y. Yan, S. Lee, J. R. Lesh, and S. Zingales. Proc. SPIE Vol. 3615, Free-Space Laser Communication Technologies XI, January 1999, pp. 142-152 (links to Abstract).

"High Data-Rate Laser Transmitter for Free-Space Optical Communication," H. Hemmati, A. Biswas, J. R. Lesh, Jet Propulsion Lab. [3615-30], presented at SPIE Photonics West, San Jose, CA, January 1999.

"Frequency-Stabilized Diode-pumped Tm, Ho: YLF Local Oscillator with ± 4 GHz of Tuning Range," H. Hemmati, C. Esproles, and R. T. Menzies, SPIE, V. 3380-15, April 1998.

"Narrow-band Filters for Optical Communications"JPL grey report by Co-Op student N. Zellner. February 1998.

"Laser communication component technilogies: Database;Status and Trends," H. Hemmati. SPIE Vol. 2699, Free-Space Laser Communication Technologies VI, 1996, p. 130 (links to Abstract).

"A 3.5 W Output, Diode-Pumped, Q-Switched 532 nm Nd:YAG Laser Pumped by Fiber-Coupled Diode Lasers," Hemmati, H., and J. R. Lesh. Technology 2004, Washington DC, November 8-10, 1994.

"A 3.5-Watt Q-switched 532 nm Nd:YAG Laser Pumped With Fiber Coupled Diode Laser," H. Hemmati and J. R. Lesh, Optics Letters, V. 19, 1322-1324 (Sept. 1994)

"Diode-pumped Laser with 3.5 W of Pulsed Output at 532 nm," H. Hemmati and J. R. Lesh, Optics Conference on Lasers and Electro-Optics (CLEO 94), May 1994, Anaheim, CA, paper CThC6.

"A 3.5 Watt Output, Diode-Pumped, Q-Switched 532 nm Laser," Hemmati, H., and J. R. Lesh, Proceedings of SPIE OE/Lase 94, paper 2123 50, January, 1994.

"Progress and Plans for the Optical Communications Program at JPL," J. R. Lesh, (Invited) Proceedings of SPIE OE-LASE 94, January 1994, paper 2123 02.

"A Novel Approach to a PPM Modulated Frequency Doubled Electro-Optic Cavity Dumped Nd:YAG Laser," Robinson, D. L. TDA Progress Report 42-97, Jet Propulsion Laboratory, Pasadena, CA, May 15, 1989.

"Performance of Efficient Q-Switched Diode-Laser-Pumped Nd:YAG, and Ho:YLF Lasers for Space Applications," Marshall, W. K., Cowles, K. and Hemmati, H. TDA Progress Report 42-95, Jet Propulsion Laboratory, Pasadena, CA, pp. 168-173, November 1988.

"Calculations for Laser Cavity Dumping for Optical Communications," Robinson, D. L. and Rayman, M. D. TDA Progress Report 42-95, Jet Propulsion Laboratory, Pasadena, CA, July 1988.

"Single Longitudinal Mode Operation of Semiconductor Laser Arrays with Etalon Feedback," H. Hemmati, Appl Phys Lett. 51 (4), 27, pp. 224-225, July 1987.

"Fraunhofer Filters to Reduce Solar Background for Optical Communications," Kerr, E. L., TDA Progress Report 42-87, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, November 15, 1986, pp. 48-55.

"Single Longitudinal Mode Operation of Semiconductor Laser Arrays with Etalon Control," H. Hemmati, TDA Progress Report 42-86, Jet Propulsion Laboratory, Pasadena, CA, April - June 1986.

"Pointing and Tracking Concept for a Deep-Space Mission," J. W. Alexander, S. Lee, C. Chen, Jet Propulsion Lab. [3615-25], presented at SPIE Photonics West, San Jose, CA. January 1999.

"A 100 Mbps resonant Cavity Phase Modulator for Coherent Optical Communications," C. Chen, D. Robinson, and H. Hemmati, Applied Optics, V. 33, 3881-3889, July 1994.

"Performance Analysis of a Noncoherently-Combined Large Aperture Optical Heterodyne Receiver," Chen, C., TDA Progress Report 42-93, Jet Propulsion Laboratory, Pasadena, CA. May 1988.

"Tier Two Safety System for OCTL Station," V. Garkanian, K. E. Wilson, Jet Propulsion Laboratory, January 2003.

"Planned Operations for the JPL Optical Communications Telescope Laboratory (OCTL)," K. E. Wilson, CRL, 2002.

"Progress in Design and Construction of the Optical Communications Telescope Laboratory (OCTL)," K. Wilson, M. Britcliffe, N. Golshan, Proc. SPIE Free-Space Laser Communication Technologies XII, VOL. 3932, P. 112-116. May 2000.

"Progress in Design and Construction of the Optical Communications Telescope Laboratory (OCTL)," K. E. Wilson, M. Britcliffe, N. Golshan, Jet Propulsion Laboratory. [3615-21], presented at SPIE Photonics West, San Jose, CA, January, 1999.

"Development of a 1-m class Telescope at TMF to Support Optical Communications Demonstrations," K. Wilson and J. Sandusky, Free-Space Laser Communication Technologies X, SPIE Optoelectronics and High-Power Lasers and Applications Conference, vol. 3266, January, 1998.

"Cost and Performance Comparison of an Earth-Orbiting Optical Communication Relay Transceiver and a Ground-Based Optical Receiver Subnet," K. Wilson, M. Wright, R. Cesarone, J. Ceniceros, and K. Shea. IPN Progress Report 42-153 , May 15, 2003.

"A Ten-Meter Ground-Station Telescope for Deep-Space Optical Communications: A Preliminary Design," M. Britcliffe, D. Hoppe, W. Roberts, and N. Page. IPN Progress Report 42-147 , November 15, 2001.

"Main-Reflector Manufacturing Technology for the Deep Space Optical Communications Ground Station," M. Britcliffe, D. Hoppe, TMO Progress Report 42-145. May 15, 2001.

"Deep-Space Optical Reception Antenna (DSORA): Aperture Versus Quality," J. Sandusky, D. Hoppe, M. Britcliffe, TMO Progress Report 42-143. November 15, 2000.

"Parameter Uncertainties for a 10-M Ground-base Optical Reception Station," Shaik, K. S., TDA Progress Report 42-103, Jet Propulsion Laboratory, Pasadena, CA, pp. 118-127, November 1991.

"A Ten-Meter Optical Telescope for Deep-Space Communications,"Shaik, K. S. , and Kerr, E. L., SPIE OELASE90, vol. 1235, pp. 347-350, 1990.

"Reflected Sunlight Reduction and Characterization for Deep-Space Optical Receiver Antenna (DSORA)," Clymer, B. D., TDA Progress Report 41-103, Jet Propulsion Laboratory, Pasadena, CA, pp. 110-117, November 1990.

"Active Optics for a Segmented Primary Mirror on a Deep-Space Optical Receiver Antenna (DSORA)," Clymer, B. D., TDA Progress Report 42-103, Jet Propulsion Laboratory, Pasadena, CA, pp. 128-134, November 1990.

"A Ten-Meter Optical Telescope for Deep-Space Communications," Shaik, K. S. and Kerr, E. L., SPIE Volume 1236, Advanced Technology Optical Telescopes IV, Proceedings of the Meeting, Tucson, AZ, Feb. 12-16, 1990. Part 1 (A91-23201 08-89). Bellingham, WA, Society of Photo-Optical Instrumentation Engineers, July, 1990.

"Architectural Design of a Ground-Based Deep-Space Optical Reception Antenna," Kerr, E. L., Presented at the SPIE OE LASE'89 Conference in Los Angeles, January 17, 1989.

"An Integral Sunshade for Optical Reception Antennas," Kerr, E. L., TDA Progress Report 42-95, Jet Propulsion Laboratory, Pasadena, CA, pp. 180-195, November 15, 1988.

"Strawman Optical Receptions Development Antenna (SORDA)," Kerr, E. L., TDA Progress Report 42-93, Jet Propulsion Laboratory, Pasadena, CA, pp. 97-110, May 15, 1988.

"A Cost-performance Model for Ground-Based Optical Communications Receiving Telescopes," Robinson, D. L. and Lesh, J. R., SPIE O-E Lase 87, Los Angeles, CA, paper #756.20, January 12-16, 1987.

"A Cost-Performance Model for Ground-Based Optical Communications Telescopes," Lesh, J. R. and Robinson, D. L., TDA Progress Report 42-87, pp. 56-64, Jet Propulsion Laboratory, Pasadena, CA, November 15, 1986.

"Optical Channel Capacity Sensitivity," J. Hamkins, S. Dolinar, D. Divsalar, TMO Progress Report 42-143. November 15, 2000.

"Capacity of Pulse-Position Modulation (PPM) on Gaussian and Webb Channels," S. Dolinar, D. Divsalar, J. Hamkins, F. Pollara, TMO Progress Report 42-142. August 15, 2000.

"Development of the Free-space Optical Communications Analysis Software (FOCAS)," M. Jeganathan, G. Mecherle and J. Lesh, Free-space Laser Communications Technologies X, Proceedings of SPIE -- The International Society for Optical Engineering, 3266 (1998).

"Modulation Techniques for Deep-Space Pulse-Position Modulation (PPM) Optical Communications," Rayman, M. D. and Robinson, D. L., Free Space Laser Communication Technologies, Proc. SPIE, vol. 885, pp. 32-35, 1988.

"Effects of Detector Deadtime on the Performance of Optical Direct-Detection Communication Links," Chen, C., TDA Progress Report 42-93, Jet Propulsion Laboratory, Pasadena, CA. May, 1988.

"Design of an Optical Communications Link in the Presence of Component Tolerances," Chen, C., TDA Progress Report 42-94, Jet Propulsion Laboratory, Pasadena, CA, pp. 170-179, August 1988.

"System Concepts and Design Examples for Optical Communications with Planetary Spacecraft," Lesh, J. R., Proceedings 1986 IEEE Global Telecommunications Conference (GLOBECOM 86), Houston, TX, , pp. 39.1.1 - 39.1.4, December 1-4, 1986.

"Received Optical Power Calculations for Optical Communications Link Performance Analysis," Marshall, W. K. and Burk, B. D., TDA Progress Report 42-87, Jet Propulsion Laboratory, Pasadena, CA , November 15, 1986.

"Simple Method for Designing or Analyzing Optical Communication Link," Lesh, J. R. Marshall, W. K. and Katz, J., TDA Progress Report 42-85, Jet Propulsion Laboratory, Pasadena, CA, pp. 24-31, May 15, 1986.

"Laboratory Characterization and Modeling of a Near-Infrared Enhanced Photomultiplier Tube," A. Biswas and W. H. Farr, IPN Progress Report 42-152, February 15, 2003.

"Laboratory characterization of silicon avalanche photodoides (APD) for pulse position modulation (PPM) detection," M. Srinivasan, B. Madden-Woods, J. Hamkins, A. Biswas, Proc. SPIE, Vol 4272, Free-Space Laser Communication Technologies XIII, June 2001.

"Design of opto-electonic receiver for deep space optical communications," G. G. Ortiz, J. V. Sandusky, A. Biswas, in Free-Space Laser Communication Technology XII, Proceedings of SPIE Vol. 3932, pp. 127-138 (2000).

"Avalanche Photodiode Arrays for Optical Communications Receivers," M. Srinivasan, V. Vilnrotter, TMO Progress Report 42-144. February 15, 2001.

"Adaptive Detector Arrays for Optical Communications Receivers," V. Vilnrotter, ," M. Srinivasan, TMO Progress Report 42-141. May 15, 2000.

"T-PPM: Novel Modulation Scheme for Optical Communication Systems Impaired by Pulsewidth Inaccuracies," K. Kiasaleh, T. Yan, Jet Propulsion Laboratory [3615-13], presented at SPIE Photonics West, San Jose, CA January 1999.

"Effective Amplifier Noise for an Optical Receiver based on Linear Mode Avalanche Photodiodes," Chen, C., TDA Progress Report, Vol. 42-97, Jet Propulsion Laboratory, Pasadena, CA. February 1988.

"Photon Detection with Cooled Avalanche Photodiodes," Robinson, D. L. and Metscher, B. D., Applied Physics Letters vol. 51, no. 19, Nov. 9, 1987.

"Single Photon Detection with Avalanche Photodiodes,"Robinson, D. L. and Metscher, B. D., Proceedings of IEEE/OSA Conference on Lasers and Electro-Optics (CLEO), Baltimore, MD, April 27, 1987.

"Cooled Avalanche Photdiodes used for Photo Detection," Robinson, D. L. and Metscher, B. D., Proceedings of SPIE Optics and Electronics Conference, SPIE O-E Lase 1987, Jan. 11-16, 1987, Los Angeles, CA.

"The Lasercom test and evaluation station for flight terminal evaluation," K. Wilson, N. Page, A. Biswas, H. Hemmati, K. Masters, D. Erickson, J. Lesh, SPIE Conference Proceedings, Vol. 2990, January 1997.

"Final Report on Performance Evaluation Tests of AstroTerra's STRV-2 Lasercom Flight Terminal " K. E. Wilson, A. Biswas, H. Hakhaka, and R. Stieger, JPL D- 16651, delivered to BMDO. Published March 1, 1999.

"Results of the STRV-2 lasercom evaluations tests," Biswas, K. E. Wison, H. Hakakha, R. Stieger and E. Korevaar, Proceedings SPIE, Vol. 3266, Free-Space Laser Communications Technology X. 1998.

"Lasercom Test and Evaluation Station (LTES) development: an update," A. Biswas, K. E. Wison, N. Page, Proceedings SPIE, Vol. 3266, Free-Space Laser Communications Technology X. 1998.

"Lasercom Test and Evaluation Station (LTES) development: an update," A. Biswas, K. Wilson, and N. Page, SPIE Conference San Jose, CA, January, 1998.

"The Lasercom Test and Evaluation Station for Flight Terminal Evaluation," K. E. Wilson , N. A. Page A. Biswas, H. Hemmati, K. Masters, D. Erickson and J. R. Lesh, SPIE Free-Space Laser Communication Technologies Proceedings, San Jose, CA, February 1997.

"Optical Attenuation Calibrations of Airport Surface Weather Observations," B. Sanii, Presentation. Proc. SPIE Vol. 4272, Free-Space Laser Communication Technologies XIII, p. 293-301, 2001.

"Upgrade of the Atmospheric Visibility Monitoring (AVM) System," D. Erickson, D. Tsiang, M. Jeganathan [3615-34], presented at SPIE Photonics West, San Jose, CA January, 1999.

"Analysis of data from the Atmospheric Visibility Monitoring (AVM) program," M. Jeganathan and N. Jalali, Free-space Laser Communications Technologies X, Proceedings of SPIE -- The International Society for Optical Engineering, Vol. 3266 (1998).

"An overview of the Atmospheric Visibility Monitoring (AVM) program", M. Jeganathan, D. Erickson, SPIE Conference Proceedings, Vol. 2990, 1997.

"Atmospheric Visibility Monitoring Program," M. Jeganathan, L. Tong, NASA Propagation Experiments Meeting (NAPEX XX), June 4-6, 1996.

"A Preliminary Optical Visibility Model," K. Cowles and B.M. Levine, TDA Progress Report 42-119, Jet Propulsion Laboratory, Pasadena, CA, November 15, 1994.

"Hardware Design for the Autonomous Visibility Monitoring Observatory," K. Cowles, TDA Progress Report 42-114, vol. April - June 1993, Jet Propulsion Laboratory, Pasadena, California, pp. 295-301, August 15, 1993.

"Atmospheric Visibility Monitoring for Planetary Optical Communications," Cowles, K., SPIE OE/Aerospace ensing, April 1991.

"Site Comparison for Optical Visibility Statistics in Southern Arizona," Cowles, K., TDA Progress Report 42-102, Jet Propulsion Laboratory, Pasadena, CA, August 15, 1990.

"Cloud Cover Modeling and Atmospheric Characterization for Deep Space Optical Communications," Cowles, K. Robotic Observatories Colloquium, Tucson, February, 1990.

"Site Selection Criteria for the Optical Atmospheric Visibility Monitoring Telescopes," Cowles, K., TDA Progress Report 42-97, Jet Propulsion Laboratory, Pasadena, CA. May 1989.

"A Preliminary Weather Model for Optical Communications Through the Atmosphere," Shaik, K., TDA Progress Report 42-95, pp. 212-218, Jet Propulsion Laboratory, Pasadena, CA. November 1988.

View GOPEX poster

"An Overview of the Galileo Optical Experiment (GOPEX)," Wilson, K. E., and J. R. Lesh, TDA Progress Report 42-114, April-June 1993, pp. 192-204, Jet Propulsion Laboratory, Pasadena, CA. August 15, 1993.

"Calibration of the Receiver Channel for the GOPEX Precursor Experiments," Biswas, A., TDA Progress Report 42-114, April-June 1993, pp. 205-212, Jet Propulsion Laboratory, Pasadena, CA. August 15, 1993.

"Results from the Galileo Laser Uplink; A JPL Demonstration of Deep Space Optical Communications," Proceedings of Annual Meeting of National Society of Black Physicists, Tallahassee, FL, April 1993.

"The Galileo Optical Experiment: A Demonstration of Deep Space Optical Communications," Wilson, K. E., Lesh, J., Proceedings of SPIE, Free-space laser communication technologies III, OE/Lase93 paper # 1866-32, Los Angeles, CA, January 1993.

"GOPEX: A laser uplink to the Galileo Spacecraft on its way to Jupiter," K. Wilson, J. R. Lesh, T. Yan, SPIE Proceedings, Vol. 1866, Free-Space Laser Communication Technologies V. LA, CA. January 1993.

"Selection and Observability Tests of GOPEX References Stars," Raymer, M. D., TDA Progress Report 42-103, July-September 1990, Jet Propulsion Laboratory, Pasadena, CA, pp. 278-283, November 1, 1990.

View GOLD poster

"Data analysis results from the GOLD experiments," M. Jeganathan, M. Toyoshima, K. Wilson, J. James, G. Xu, J. Lesh, SPIE Conference Proceedings, Vol. 2990, 1997.

"Results from Phase-1 and Phase-2 GOLD Experiments,"K. E. Wilson, M. Jeganathan, J. James, G Xu, and J. R. Lesh, JPL TDA Progress Report 42-128, Jet Propulsion Laboratory, Pasadena, CA. February, 1997.

"Reduction of ETS-VI Laser Communication Equipment Optical-Downlink Telemetry Collected During GOLD," Toyoshima, M., K. Araki, Y. Arimoto, M. Toyoda, M. Jeganathan, K. Wilson, and J. R. Lesh, TDA Progress Report 42-128, October-December 1996, pp. 1-9, Jet Propulsion Laboratory, Pasadena, CA. February 15, 1997.

"Overview of the Ground-to-orbit Lasercom Demonstration," K. E. Wilson, J. R. Lesh, K. Araki and Y. Arimoto, Invited Paper SPIE Free-Space Laser Communication Technologies Proceedings , San Jose, CA, February 1997.

"Preliminary Results, Analysis, and Overview of Part-1 of the GOLD Experiment," K. Wilson and M. Jeganathan, CRL International Symposium on Advanced Technologies for Communications and Sensing, Tokyo, Japan (March 11-14, 1996).

"An Overview of the GOLD Experiment between the ETS-VI Satellite and the Table Mountain Facility," K. Wilson, TDA report 42-124, Jet Propulsion Laboratory, Pasadena, CA. February 15, 1996.

"Preliminary Analysis of Fluctuations in the Received Uplink-Beacon-Power Data Obtained From the GOLD Experiments,'' M. Jeganathan, K. Wilson, J. Lesh, TDA Progress Report 42-124, pp. 20, Jet Propulsion Laboratory, Pasadena, CA. February 15, 1996.

"Preliminary results of the GOLD (Ground/Orbiter Lasercomm Demonstration) Experiment Between Table Mountain and the ETS-VI Satellite," K. Wilson, J. Lesh, Y. Arimoto, K. Araki, SPIE Proceedings, San Jose, CA . Jan, 1996.

"An overview of the Compensated Earth-Moon-earth laser Link (CEMERLL) Experiment," K. Wilson. SPIE Proceedings, LA., Vol. 2123, January, 1994.

"The Propagation of an Atmospheric-compensated Laser Beam to the Apollo 15 Lunar Array," K. E. Wilson, P. R. Leatherman, R. Cleis, J. Spinhirne, and R. Q. Fugate.

"Mountain-Top-to-Mountain-Top Optical Link Demonstration: Part I", A. Biswas and M. W. Wright, IN Progress Report 42-149 May 15, 2002.

"Mountain-Top-to-Mountain-Top Optical Link Demonstration: Part II," A. Biswas and M. W. Wright, IN Progress Report 42-151, November 15, 2002.

"45 Km Optical Link Experiment (Paper)" A. Biswas, M. Wright, B. Sanii, N. Page, Proc. SPIE Free-Space Laser Communication Technologies XIII, Volume 4272, p. 60-71 (2001).

"Ground to ground optical communications demonstration," A Biswas, S. Lee, TMO Progress Report 42-141. May 15, 2000.

"45 km Horizontal Path Optical Link Experiment," A. Biswas, J. Ceniceros, M. J. Novak, M. Jeganathan, D. Erickson, J. De Pew, B. Sanii, A. Portillo, V. Lo, J. R. Lesh, Jet Propulsion Lab. [3615-05], presented at SPIE Photonics West, San Jose, CA, January 1999.

"Effect of Aperture Averaging on a 570 Mbps 42 km Horizontal Path Optical Link," K. E. Wilson and A. Biswas, JPL, S. Bloom and V. Chan ,ThermoTrex Corp., SPIE Proceedings conference on Atmospheric Propagation, Orlando FL, April 1995.

"Design of a 2.5 Gbps Optical Transmitter for the International Space Station," G. G. Ortiz, M. Jeganathan, J. V. Sandusky, H. Hemmati, Jet Propulsion Lab. [3615-18], presented at SPIE Photonics West, San Jose, CA, January, 1999.

"Proposed Optical Communications System for NGST (Next Generation Space Telescope)," J. Ceniceros, J. R. Lesh, Jet Propulsion Laboratory [3615-20], presented at SPIE Photonics West, San Jose, CA, January, 1999.

"System Requirements for a Deep-Space Optical Transceiver," C. Chen, J. W. Alexander, H. Hemmati, S. Monacos, T. Yan, S. Lee, J. R. Lesh, S. Zingales, Jet Propulsion Laboratory [3615-15], presented at SPIE Photonics West, San Jose, CA, January, 1999.

"Design and Development of a Baseline Deep-Space Optical PPM Transceiver," T. Yan, C. Chen, Jet Propulsion Laboratory [3615-16], presented at SPIE Photonics West, San Jose, CA, January, 1999.

"Preliminary Optomechanical Design for the X2000 Transceiver," N. A. Page, H. Hemmati, Jet Propulsion Laboratory [3615-22], presented at SPIE Photonics West, San Jose, CA, January, 1999.

"Earth-to-Deep-Space Optical Communications System with Adaptive Tilt and Scintillation Correction by Use of Near-Earth Relay Mirrors," J. Armstrong, P. Yeh and K. Wilson, Optics Letters Vol. 23 No. 14, July 1998.

"Design of a 2.5 Gbps Optical Transmitter for the International Space Station," G. G. Ortiz, M. Jeganathan, J. V. Sandusky, and H Hemmati, in Free-Space Laser Communication Technology XI, Proceedings of SPIE Vol. 3615, pp. 179-184 (1999).

"High-Rate Optical Communications Links for Virtual Presence in Space," J. Lesh, K. Wilson, J. Sandusky, M. Jeganathan, H. Hemmati, S. Monacos, N. Page, A. Biswas, Space Technology and Applications International Forum (STAIF - 98), Albuquerque, NM, January 25, 1998.

"Planning for a Long-Term Optical Demonstration from the International Space Station", J. Sandusky, J.Lesh. Free-Space Laser Communication Technologies X, SPIE Optoelectronics and High-Power Lasers and Applications Conference, vol. 3266, January, 1998.

"Laser Communications Terminal for the X2000 Series of Planetary Missions," H. Hemmati & J. R. Lesh, SPIE, V. 3266, January, 1998.

"A Multi-function Telescope Combining Laser-Communication & Science Imaging," H. Hemmati & J. R. Lesh, SPIE, V. 3266, January, 1998.

"Results of the Compensated Earth-Moon-Earth Retroreflector laser link Experiment," K. Wilson, P. Leatherman, R. Cleis , J. Spinhirne and R. Fugate, TDA Progress Report 42-131, Jet Propulsion Laboratory, Pasadena, CA. November, 1997.

"Space Communications Technologies for Interstellar Missions," J. Lesh, C. Ruggier, R. Cesarone, Journal of the British Interplanetary Society, Vol. 49, pp. 7-14, 1996.

"Extreme Deep Space Communications," L. Deutsch, C. Edwards, and J. Lesh, 1st IAA Symposium on Realistic Near-Term Advanced Scientific Space Missions, Turin, Italy, June 25-27, 1996.

"Laser Communication Component technologies: database; Status and Trends," H. Hemmati, SPIE, V. 2699, 310-314 (1996).

"Design Altitude & Velocity Vector Micro-Sensor," H. Hemmati & M. Frerking, contained in JPL Report D-12614, V. 1, entitled "Beyond the Horizon Mars Technology", 1996.

"Optical phase-locked loop for an amplitude modulated communications link using solid state lasers," M. Z. Win, C.C. Chen, and R. A. Scholtz, IEEE Journal on Selected Areas of Communications, Vol.13, No. 3, pp 569-576, April, 1995.

"Laser Communication Criteria for Laser Communication," K. Shaik & H. Hemmati, Proceedings of SPIE Photonics West '95, San Jose , February, 1995.

"Optical Communications for NASA's Small Spacecraft Missions of the Future," Lesh, J. R. , C. C. Chen, and H. Hemmati. 7th Annual AIAA/USU Conference on Small Satellites, Utah State University, Logan UT, September, 1993.

"A 100 Mbps resonant cavity phase modulator for coherent optical communications," C. C. Chen, D. L. Robinson, and H. Hemmati, Proc. SPIE Vol. 1635, Free-Space Laser Communication Technolgies IV, May, 1993.

"A 10Mbps electro-optic resonant phase modulator," D. L. Robinson, C.C. Chen, and H. Hemmati, Optical Engineering, vol. 32, no. 3, March, 1993.

"Photonics for Interplanetary Communications," Lesh, J. R., Proceedings of SPIE OE/Aerospace Sensing '93 paper 1953-36, Orlando FL, April, 1993.

"Recent Progress in Deep Space Optical Communications," Lesh, J. R.. Proceedings of SPIE OE/Lase93, Los Angeles CA, January 1993, paper # 1866-05 (also printed in Proceedings of SPIE conference on Optical SETI, OE/Lase93, Los Angeles, CA, January 1993, paper # 1867-17).

"Theoretical Challenges in Deep Space Laser Communications," Chen, C.C., and J. R. Lesh. IEEE Communications Theory Workshop, Port Ludlow, WA, June 29-31, 1992. "Optical Communications Hardware with Reduced Complexity and Cost," Chen, C.C., and J. R. Lesh, NASA Communications Technology Transfer Conference, Cleveland, OH, Oct 20-21, 1992.

"Optical communications hardware with reduced complexity and cost," C.C. Chen and J. R. Lesh. NASA Communications Technology Transfer Conference, Cleveland, OH, Oct. 20-21, 1992.

"The NASA Program for Optical Deep Space Communications at JPL," Lesh, J. R.. in Advanced Methods for Satellite and Deep Space Communications, J. Hagenauer (ed), Springer Verlag, Lecture Notes in Control and Information Sciences 182, pp 159-179, September, 1992.

"Theoretical challenges for deep space optical communications," C.C. Chen and J. R. Lesh, 22nd IEEE Workshop on Communications, Port Ludlow, WA, June 29-31, 1992.

"Application of Laser Guide Star Technology to Space-to-Ground Optical Communications Systems," Chien, C.-C., and Lesh, J. R. presented at the Laser guide star Adaptive Optics Workshop, Phillips Laboratory, Kirtland AFB, Albuquerque, NM, March 10-12, 1992.

"A Plan for the Development and Demonstration of Optical Communications for Deep-Space," Lesh, J. R., Deutsch, L. J. and Weber, W. J., TDA Progress Report 42-103, Jet Propulsion Laboratory, Pasadena, CA. February, 1991.

"Laser Communications from Deep Space," Lesh, J. R. Presentation at the LASERS'89 meeting, New Orleans, December, 1989.

"Status and Challenges for Applications of Laser Communications to Deep-Space Missions," Lesh, J. R. LEOS Annual Meeting, Orlando, October, 1989.

"Optical Communications Systems and Technology for Deep-Space Exploration," Lesh, J. R., 2nd AIAA/JPL International Conference on Solar System Exploration, Pasadena, August, 1989.

"Implications of Daytime Sky Brightness for Ground-Based Optical Navigation," Folkner, W. M., Finger, M. H. and Davidson, J. M., IOM 335.3-88-14, October 28, 1988.

"A Near-Earth Optical Communications Terminal with Corevolving Planetary Sunshield," Kerr, E. L., TDA Progress Report 42-91, Jet Propulsion Laboratory, Pasadena, CA, pp. 133-140, November 15, 1987.

NASA Tech Briefs

"Spaceborne Telescope for Communication, Ranging & Imaging", J. Lesh and H. Hemmati, NPO-20425 (2000).

"Telescope for Imaging & Laser Communications" , H. Hemmati and J. Lesh, NPO-20388 (2000).

"Heterodyne Doppler Lidar Using Pseudonoise Code", R. Menzies, G. Cardell and H. Hemmati, NPO-20466 (2000)

"Tunable, Frequency-Stabilized Diode-Pumped Tm, Ho: YLF Laser", H. Hemmati, C. Esproles & R. Menzies, NPO-20444 (1999)

"Narrow-Band Optical Filters Made by Spectral hole Burning," H. Hemmati, NPO-19687 (1997)

"Parametric Amplification ofr Detecting Weak Signals, H. Hemmati, C. Chen, P. Chakravarti, NPO-19514 (1996)

"More About OCD beam-Steering Subsystem for Laser Communication", N. Page, C. Chen, H. Hemmati & C, Chen, NPO-19381 (1995)

"Digital Controller for Laser Beam Steering Subsystem, Part 1", H. Ansari, NPO-19193 (1995)

"Digital Controller for Laser Beam Steering Subsystem, Part 2", H. Ansari, and L. Voisinet, NPO-19441 (1995)

"Optical Communications Demonstrator with CCD-based acquisition and tracking," NASA Tech Brief (December, 1994)

"Lasercom system architecture with reduced complexity," NASA Tech Brief (October, 1994)

"Laser Transmitter Aims at Laser Beacon", H. Hemmati & J. Lesh, NPO-18537 (1993)

"Diode-Pumped, Q-Switched, Frequency-Doubled Laser,", H. Hemmati & J. Lesh, NPO-18535 (1993)

"Large Diameter Ball Lenses Collimate and Focus Diode-laser-Array Beams", H. Hemmati, NPO-18469 (1993)

"Optical Phase Locked Loop for Optical Communications," Win, M., C. Chen, J. Lesh, W. Marshall, M. Rayman, and R. Scholz, NASA Tech Brief Vol. 16, No. 4, Item #92 (April, 1992)

"Self-injection Locking of Diode Lasers,",H. Hemmati, MFS-28499 (1991)

"Solid-State Single Photon Counter," Robinson, D. L. and Metscher, B. D., NASA Tech Brief, Vol. 12, No. 8 (September 1988)

"Injection Phase-Lock Laser Diode Array," Lesh, J. R., NASA Tech Brief, Vol. 11, #4 (May, 1987)

PATENTS

"Semi-Monolithic Cavity for External resonnat Frequency Doubling and Method of Performing the Same", H. Hemmati, Caltech Patent # 5,982,788 (1999)

"Laser with Optically Driven Q-Switch", H. Hemmati, NASA Patent # 5,408,480 (1995)

"Tm, Ho:YLF Laser End Pumped by a Semiconductor Diode Laser Array", NASA Patent # 4,974.230

"Electro-Optic Resonant Phase Modulator", C. Chen, D. Robinson & H. Hemmati, NASA Patent # 5,347,392

"Frequency Doubled, Cavity Dumped Feedback Laser," Sipes, D. L. and Robinson, D. L. Patent filed September 6, 1988 to US Patent Office.

"Method and Apparatus for Efficient Operation of Optically Pumped Laser," Sipes, D. L. U.S. Patent #4, 719, 940, December 1988.

"Monolithic electro-Optic Modulator Array," Robinson, D. L., Marshall, W. K. and Katz, J., Patent #4, 744.616. May 17, 1988.

"Means of Phase-Locking the Outputs of a Surface Emitting Laser Array," Lesh, J. R., U.S. Patent # 4677629, June 30, 1987.

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