Title

Coherent And Spectral Beam Combining Of Fiber Lasers Using Volume Bragg Gratings

Keywords

coherent beam combining; fiber lasers; spectral beam combining; volume Bragg gratings

Abstract

Five-channel spectral beam combining (SBC) using volume Bragg gratings (VBGs) in photo-thermo-refractive (PTR) glass with 0.5 nm spectral separation between channels and combined power >750 W has been recently reported. We report on improvements in this technique with the use of thermal control of VBGs that allows precise high-power alignment required for dense SBC with 0.25 nm spectral separation of channels. Experimental results of passive coherent beam combining (CBC) of fiber lasers using multiplexed VBGs are presented and analyzed. Methods for achieving 100 kW class systems using novel hybrid architectures that combine both coherent and spectral beam combining are discussed. © 2010 Copyright SPIE - The International Society for Optical Engineering.

Publication Date

6-21-2010

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

7686

Number of Pages

-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.851363

Socpus ID

77953546998 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/77953546998

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