Title

Beam combining of lasers with high spectral density using volume Bragg gratings

Authors

Authors

O. Andrusyak; V. Smirnov; G. Venus;L. Glebov

Comments

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Abbreviated Journal Title

Opt. Commun.

Keywords

Laser beam combining; Volume holographic gratings; Photorefractive; materials; FIBER LASERS; HIGH-POWER; PTR GLASS; DIFFRACTION; Optics

Abstract

Incoherent combining of multiple laser beams with offset wavelengths into a single near-diffraction-limited beam is an effective solution to increasing energy brightness and scaling output power of high-power lasers. Volume Bragg gratings (VBGs) recorded in photo-thermo-refractive (PTR) glass allow spectral beam combining with a remarkably high spectral density of channels. Spectral beam combining (SBC) of five channels within 1-2 nm bandwidth around 1064 and 1550 nm into a single near-diffraction-limited beam with absolute efficiency 92-94% is demonstrated. Scaling of this technique to multi-kW power level is discussed. (C) 2009 Elsevier B.V. All rights reserved.

Journal Title

Optics Communications

Volume

282

Issue/Number

13

Publication Date

1-1-2009

Document Type

Article

Language

English

First Page

2560

Last Page

2563

WOS Identifier

WOS:000266762600020

ISSN

0030-4018

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