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Proceedings Paper

Volume Bragg grating improves characteristic of resonantly diode-pumped Er:YAG, 1.65-um DPSSL
Author(s): Igor Kudryashov; Dmitri Garbuzov; Mark Dubinskii
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Paper Abstract

Significant performance improvement of the Er(0.5%):YAG diode pumped solid state laser (DPSSL) has been achieved by pump diode spectral narrowing via implementation of external volumetric Bragg grating (VBG). Without spectral narrowing, with a pump path length of 15 mm, only 37% of 1532 nm pump was absorbed. After the VBG spectral narrowing, the absorption of the pumping radiation increased to 62%. As a result, the incident power threshold was reduced by a factor of 2.5; the efficiency increased by a factor of 1.7, resulting in a slope efficiency of ~23%. A maximum of 51 W of CW power was obtained versus 31 W without the pump spectrum narrowing.

Paper Details

Date Published: 20 February 2007
PDF: 7 pages
Proc. SPIE 6451, Solid State Lasers XVI: Technology and Devices, 64510P (20 February 2007); doi: 10.1117/12.699154
Show Author Affiliations
Igor Kudryashov, Princeton Lightwave Inc. (United States)
Dmitri Garbuzov, Princeton Lightwave Inc. (United States)
Mark Dubinskii, Army Research Lab. (United States)

Published in SPIE Proceedings Vol. 6451:
Solid State Lasers XVI: Technology and Devices
Hanna J. Hoffman; Ramesh K. Shori; Norman Hodgson, Editor(s)

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