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Proceedings Paper

High-efficiency pulsed laser transmitters for deep-space communication
Author(s): Hamid Hemmati; Malcolm W. Wright; Abhijit Biswas; Carlos Esproles
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Paper 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.

Paper Details

Date Published: 2 May 2000
PDF: 8 pages
Proc. SPIE 3932, Free-Space Laser Communication Technologies XII, (2 May 2000); doi: 10.1117/12.384309
Show Author Affiliations
Hamid Hemmati, Jet Propulsion Lab. (United States)
Malcolm W. Wright, Jet Propulsion Lab. (United States)
Abhijit Biswas, Jet Propulsion Lab. (United States)
Carlos Esproles, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 3932:
Free-Space Laser Communication Technologies XII
G. Stephen Mecherle, Editor(s)

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