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Proceedings Paper

High-power solar-pumped Nd:YAG laser amplifier for free-space laser communication
Author(s): Idit L. Pe'er; Nir Naftali; Amnon Yogev
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Paper Abstract

The wireless international communication these days faces a practical bandwidth limitation since the frequency band offered by satellites is almost exhausted. In addition, the energy source of a satellite is limited, hence, broadening the frequency domain in a wireless system increases the cost of operation. Free-space optical communication, using direct sun to laser conversion, can contribute to overcome these problems. A lab simulation for outer space solar laser communication was performed. A combination of imaging and non-imaging concentrators for pumping solar laser (oscillator and amplifier) were built and analyzed. An approximated 3D-CPC was designed, assembled and tested. The laser crystal characteristics were measured under the system's pumping conditions. An oscillator-amplifier system was designed built and analyzed. Direct and indirect gain measurements were done. Gain up to 1.4 was measured at a low sun flux of 630 w/m2. Communication experiments at a boud rate of 1.5 MHz were conducted using intensity modulation outside the cavity.

Paper Details

Date Published: 3 October 1997
PDF: 11 pages
Proc. SPIE 3139, Nonimaging Optics: Maximum Efficiency Light Transfer IV, (3 October 1997);
Show Author Affiliations
Idit L. Pe'er, Weizmann Institute of Science (Israel)
Nir Naftali, Weizmann Institute of Science (Israel)
Amnon Yogev, Weizmann Institute of Science (Israel)

Published in SPIE Proceedings Vol. 3139:
Nonimaging Optics: Maximum Efficiency Light Transfer IV
Roland Winston, Editor(s)

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