Title

Forced Air Cooling Of Volume Bragg Gratings For Spectral Beam Combination

Keywords

air cooling; spectral beam combining; thermal; Volume Bragg grating

Abstract

Volume Bragg gratings have been successfully used in spectral beam combining of high power fiber lasers with narrow channel separation and in four channel passive coherent beam combining of fiber lasers. Future application of beam combining with kilowatt level lasers requires a more detailed understanding of how to cool the gratings without hurting beam quality. Forced air cooling blown across both surfaces of the grating is both easy and cheap, but has been avoided in the past due to concerns of how the air density fluctuations will hurt beam quality. It is now shown that forced air cooling has no adverse effect on the M2 parameter due to density fluctuations in the air, and can efficiently cool VBG's such that no degradation in beam quality is seen due to thermal distortions. © 2013 Copyright SPIE.

Publication Date

5-30-2013

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

8601

Number of Pages

-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.2005951

Socpus ID

84878209397 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84878209397

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