Title

Efficient Power Scaling Of Laser Radiation By Spectral Beam Combining

Abstract

The possibility of achieving multikilowatt laser radiation by spectrally combining beams using volume Bragg gratings (VBGs) is shown. The VBGs recorded in a photothermorefractive glass exhibit long-term stability of all its parameters in high-power laser beams with power density >1 MW/cm2 in the cw beam of total power on a kilowatt level. We consider an architecture-specific beam-combining scheme and address the cross-talk minimization problem based on optimal channel positioning. Five-channel high efficiency spectral beam combining resulted in a >750 W near-diffraction- limited cw beam has been demonstrated experimentally. © 2008 Optical Society of America.

Publication Date

2-15-2008

Publication Title

Optics Letters

Volume

33

Issue

4

Number of Pages

384-386

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/OL.33.000384

Socpus ID

40149084305 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/40149084305

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