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Proceedings Paper

High-repetition rate, short-pulse, diode-pumped solid state laser for space communications
Author(s): Christian Larat; Muriel Schwarz; Jean-Paul Pocholle; Gilles Feugnet; Michel Roger Papuchon
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Paper Abstract

The CNES (Centre National d'Etudes Spatiales) established the laser system characteristics for Mars-Earth spatial communications using the Pulse Position Modulation (PPM) technique. Today, diode-pumped solid-state lasers are under intense research and development. Indeed, in comparison with flash-lamp pumped laser, they offer significant advantages in terms of efficiency, compactness, lifetime and high beam quality. We have demonstrated that gain- switch operation is preferable to Q-switching technique to control and to obtain a good pulse width and amplitude reproducibility. The pulse width requirement and the laser-diode pumping scheme lead to a preferred configuration based on a microchip laser oscillator coupled to an amplifier. Experiments were performed with several microchips of Nd:YAG and Nd:YVO4 crystals pumped by fiber-coupled laser-diode. The design of the transversally-pumped amplifier is based on a modified multipass 1:1 confocally reimaging longitudinally-pumped amplifier proposed by Plaessmann et al.

Paper Details

Date Published: 30 September 1994
PDF: 6 pages
Proc. SPIE 2210, Space Optics 1994: Space Instrumentation and Spacecraft Optics, (30 September 1994); doi: 10.1117/12.188114
Show Author Affiliations
Christian Larat, Thomson-CSF (France)
Muriel Schwarz, Thomson-CSF (France)
Jean-Paul Pocholle, Thomson-CSF (France)
Gilles Feugnet, Thomson-CSF (France)
Michel Roger Papuchon, Thomson-CSF (France)


Published in SPIE Proceedings Vol. 2210:
Space Optics 1994: Space Instrumentation and Spacecraft Optics
Thierry M. Dewandre; Joachim J. Schulte-in-den-Baeumen; Emmanuel Sein, Editor(s)

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