High-efficiency pulsed laser transmitters for deep-space communication

Hamid Hemmati; Malcolm W. Wright; Abhijit Biswas; Carlos Esproles

doi:10.1117/12.384309

2 May 2000 High-efficiency pulsed laser transmitters for deep-space communication

Hamid Hemmati, Malcolm W. Wright, Abhijit Biswas, Carlos Esproles

Proceedings Volume 3932, Free-Space Laser Communication Technologies XII; (2000) https://doi.org/10.1117/12.384309
Event: Symposium on High-Power Lasers and Applications, 2000, San Jose, CA, United States

Abstract

Highly efficient laser sources are required for deep space optical telecommunication. This paper investigates the efficiency components for pulsed diode pumped solid state laser transmitters and determines the overall wall-plug efficiency applicable to a space-borne system. Thermal control of the pump diodes is critical to achieving optimum photon efficiency. Hence, a thermal model involving either a thermo-electric cooler or loop heat pipes is applied to the efficiency calculations. The electro-optical conversion efficiency for an optimized bulk design is expected to be up to 28% with the overall wall-plug efficiency being in the 12 - 16% range depending on the radiator temperature. A fiber based master-oscillator power-amplifier design is also investigated with passively cooled pumped diodes and promises high efficiency operation. Preliminary results from an evaluation model are also discussed.

Citation Download Citation

Hamid Hemmati, Malcolm W. Wright, Abhijit Biswas, and Carlos Esproles "High-efficiency pulsed laser transmitters for deep-space communication", Proc. SPIE 3932, Free-Space Laser Communication Technologies XII, (2 May 2000); https://doi.org/10.1117/12.384309

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