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Proceedings Paper

Solid state Raman laser for frequency conversion and beam cleanup of high-average-power lasers
Author(s): AnnMarie L. Oien; J. P. Tucker; G. T. Bennett; Iain T. McKinnie; D. D. Smith
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Paper Abstract

Current established solid state Raman laser (SSRL) materials tend to be oxides or tungstates, which have low thermal conductivity and therefore inherently limited power scaling potential. We have tested the Raman material bulk undoped gallium phosphide (GaP), which has excellent thermal and mechanical properties, and assessed its ability to power scale. Pumping GaP with 1.06 and 1.3 micron Q- Switched Nd:YAG lasers has resulted in outputs of up to 14 mJ, the highest pulse energy GaP Raman laser known to date. Conclusions from laboratory tests and finite element modeling indicate that this Raman laser material can scale to kW average output power levels. We are currently investigating Raman lasers that will improve the pump laser spatial beam quality during Raman conversion. This could be developed into an add-on 'kit' that would improve beam quality in Nd:YAG industrial lasers with power output levels of over 100 W. We will present our latest GaP Raman laser laboratory results and discuss power scaling performance estimates.

Paper Details

Date Published: 16 August 2000
PDF: 11 pages
Proc. SPIE 4065, High-Power Laser Ablation III, (16 August 2000); doi: 10.1117/12.407339
Show Author Affiliations
AnnMarie L. Oien, Coherent Technologies, Inc. (United States)
J. P. Tucker, Coherent Technologies, Inc. (United States)
G. T. Bennett, Coherent Technologies, Inc. (United States)
Iain T. McKinnie, Coherent Technologies, Inc. (United States)
D. D. Smith, Coherent Technologies, Inc. (United States)

Published in SPIE Proceedings Vol. 4065:
High-Power Laser Ablation III
Claude R. Phipps, Editor(s)

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