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The adaptive optics and transmit system for NASA's Laser Communications Relay Demonstration project

Show simple item record Roberts Jr., Lewis C. Burress, Rick Fregoso, Santos Herzog, Harrison Piazzolla, Sabino Roberts, Jennifer E. Spiers, Gary D. Truong, Tuan N. 2019-06-06T19:36:45Z 2019-06-06T19:36:45Z 2016-08-28
dc.identifier.citation SPIE Optics and Photonics, San Diego, California, August 28 - September 1, 2016 en_US
dc.identifier.clearanceno 16-3799
dc.description.abstract The Laser Communication Relay Demonstration is NASA’s multi-year demonstration of laser communication to a geosynchronous satellite. We are currently assembling the optical system for the first of the two baseline ground stations. The optical system consists of an adaptive optics system, the transmit system and a camera for target acquisition. The adaptive optics system is responsible for compensating the downlink beam for atmospheric turbulence and coupling it into the modem’s single mode fiber. The adaptive optics system is a woofer/tweeter design, with one deformable mirror correcting for low spatial frequencies with large amplitude and a second deformable mirror correcting for high spatial frequencies with small amplitude. The system uses a Shack-Hartmann wavefront sensor. The transmit system relays four beacon beams and one communication laser to the telescope for propagation to the space terminal. Both the uplink and downlink beams are centered at 1.55 microns. We present an overview of the design of the system as well as performance predictions including time series of coupling efficiency and expected uplink beam quality. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA: Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2016 en_US
dc.subject Laser Communication en_US
dc.subject Adaptive Optics en_US
dc.title The adaptive optics and transmit system for NASA's Laser Communications Relay Demonstration project en_US
dc.type Preprint en_US

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