1030nm Yb-fiber-MOPA-based, multi-aperture high power, high energy uplink laser beacon for deep space communication

Doruk Engin; John Burton; Ibraheem Darab; Frank Kimpel; Brian Mathason; Shantanu Gupta

doi:10.1117/12.2040296

6 March 2014 1030nm Yb-fiber-MOPA-based, multi-aperture high power, high energy uplink laser beacon for deep space communication

Doruk Engin, John Burton, Ibraheem Darab, Frank Kimpel, Brian Mathason, Shantanu Gupta

Author Affiliations +

Proceedings Volume 8971, Free-Space Laser Communication and Atmospheric Propagation XXVI; 89710D (2014) https://doi.org/10.1117/12.2040296
Event: SPIE LASE, 2014, San Francisco, California, United States

Abstract

A Yb LMA fiber amplifier based laser transmitter capable of operating with high average power and high energy (~500W, 1mJ) is presented. The prototype, all-fiber, high TRL level laser transmitter is designed to meet all the single aperture requirements of an eight aperture deep space laser beacon system. The high speed FPGA controlled transmitter supports a directly modulated DFB laser and two acousto-optic modulators which are used to implement an open loop pattern dependent -pulse pre-shaping algorithm. Ultra-fast high power diode drivers are used for generating outer nested PPM modulation with Binary PPM (67usec, 33mJ pulses) and for implementing <1usec loss of signal (LOS) protection. Optical performance to be presented will include diffraction limited (M²~1.2) nested PPM optical outputs with >300W average and 9kW peak power with >70% o-o efficiency for the final power stage.

Citation Download Citation

Doruk Engin, John Burton, Ibraheem Darab, Frank Kimpel, Brian Mathason, and Shantanu Gupta "1030nm Yb-fiber-MOPA-based, multi-aperture high power, high energy uplink laser beacon for deep space communication", Proc. SPIE 8971, Free-Space Laser Communication and Atmospheric Propagation XXVI, 89710D (6 March 2014); https://doi.org/10.1117/12.2040296

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