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Proceedings Paper

Nd,Cr4+:YAG passively Q-switched microlaser
Author(s): Eric J. Brekke; Brian L. Peterson; Charles L. Stonecypher
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Paper Abstract

A summary of our MicroSlab laser (patent pending) development activities will be presented. We demonstrated pulsed 1064 nm laser emissions from a 0.75 x 1.5 x 4 mm Nd,Cr4+:YAG slab laser. The Nd:YAG gain medium was grown on top of a Cr4+:YAG substrate by the liquid phase epitaxy growth method, were the Cr4+:YAG layer acted as the passive Q switch. The slab end faces were coated as an end mirror and an output coupler to minimize cavity length. The gain medium was side pumped with a 0.1 x 1.0 laser diode beam, emitting at 808 nm. These conditions produced the 1064 nm single pulse beam, with a pulse energy of 754 μJ and a pulse width of 0.97 ns. The corresponding peak power is 0.77 MW per pulse. A similar MicroSlab laser, different only in the location of the output coupler, was used to drive an intracavity KTP OPO. The cavity, emitting 1573 nm, achieved pulse energy greater than 200 μJ with a pulse width of 1.1 ns. We continue to optimize the pump source and other wavelength conversion crystals to develop highly energetic compact laser sources.

Paper Details

Date Published: 29 July 2002
PDF: 9 pages
Proc. SPIE 4723, Laser Radar Technology and Applications VII, (29 July 2002); doi: 10.1117/12.476399
Show Author Affiliations
Eric J. Brekke, Northrop Grumman Corp. (United States)
Brian L. Peterson, Northrop Grumman Corp. (United States)
Charles L. Stonecypher, ES Projects, Inc. (United States)

Published in SPIE Proceedings Vol. 4723:
Laser Radar Technology and Applications VII
Gary W. Kamerman, Editor(s)

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