Title

Efficient power scaling of laser radiation by spectral beam combining

Authors

Authors

A. Sevian; O. Andrusyak; I. Ciapurin; V. Smirnov; G. Venus;L. Glebov

Comments

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Abbreviated Journal Title

Opt. Lett.

Keywords

FIBER LASERS; Optics

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/cm(2) 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. (C) 2008 Optical Society of America.

Journal Title

Optics Letters

Volume

33

Issue/Number

4

Publication Date

1-1-2008

Document Type

Article

Language

English

First Page

384

Last Page

386

WOS Identifier

WOS:000254182300029

ISSN

0146-9592

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