Laser system for optical free

Coherent light generators – Particular resonant cavity – Specified cavity component

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359338, H01S 308

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active

059740744

ABSTRACT:
The instant invention relates to a laser system for optical free space communications, in particular the generation of amplified laser light under conditions in outer space. In the process, an optical beam (72) to be amplified is conducted via a polarizing beam splitter (71) to a Faraday rotator (70) and brought from there to a neodymium crystal (68). By means of reflection, appropriate diffraction and passage through a quarter-wave plate (67), a multiple passage through the neodymium crystal (68) is forced and amplification is achieved by this.

REFERENCES:
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patent: 5249196 (1993-09-01), Scheps
patent: 5388113 (1995-02-01), Oka
Baer et al. "Performance of Diode-Pumped Nd:YAG and YLF Lasers in a Tightly Folded Resonator Configuration" IEEE Journal of Quantum Electronics vol. 28, No. 4, 1992 pp. 1131-1137 no month.
Kane et al. "Diode-Pumped Nd:YAG Amplifier with 52-dB gain" Free-Space Laser Communication Technologies VII SPIE vol. 2381, Feb. 1995, pp. 273-284.
Araki et al. "Laser transmitter systems for high-data-rate optical inter-orbit communications" Free-Space Laser Communication Technologies VII SPIE vol. 2381, Feb. 1995, pp. 264-272.
Yanovsky et al. "Compact, Single-Frequency, High-Power ND: Glass Laser" IEEE Journal of Quantam Electronics vol. 30, No. 4, 1994 pp. 884-886 no month.
Marshalek et al. "Lightweight, high-data-rate laser communications terminal for low-Earth-orbit satellite constellations" SPIE vol. 2381 1995 pp. 72-82 no month.
Krainak et al. "1047-nm Master Oscillator Power Amplifier Free-Space Optical Communications laser Transmitter" IEEE Journal of Quantum Electronics vol. 032, No. 1 Jan. 1996 pp. 112-117.
Olson et al. Multipass Diode-Pumped Nd:YAG Optical Amplifiers At 1.06 um and 1.32 um IEE Photonics technology letters vol. 6, No. 5, May 1994 pp. 605-608.
Carlson et al. "Monolithic Glass Block Lasercom Terminal: Hardware Proof of Concept and Test Results" SPIE, vol. 2381 1995 pp. 90-102 no month.

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