140 W Cr:ZnSe laser system | Zendy

Igor Moskalev | Zendy; Sergey Mirov | Zendy; Mike Mirov | Zendy; Sergey Vasilyev | Zendy; Viktor Smolski | Zendy; Andrey Zakrevskiy | Zendy; Valentin Gapontsev | Zendy

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140 W Cr:ZnSe laser system

Author(s) -

Igor Moskalev,

Sergey Mirov,

Mike Mirov,

Sergey Vasilyev,

Viktor Smolski,

Andrey Zakrevskiy,

Valentin Gapontsev

Publication year - 2016

Publication title -

optics express

Language(s) - Polish

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.24.021090

Subject(s) - optics , materials science , laser , fiber laser , optoelectronics , laser power scaling , optical fiber , physics

We report a significant breakthrough in the development of fiber-pumped high-power CW laser systems based on Cr 2+ :ZnS and Cr 2+ :ZnSe gain media. We demonstrate output power levels of up to 140 W near 2500 nm, and 32 W at 2940 nm with corresponding optical efficiencies of 62% and 29%. Our novel approach is based on rapid simultaneous scanning of the collinear laser mode and pump beam across the Cr:ZnS/Se gain element which allows us to virtually eliminate thermal lensing effects and obtain unprecedented levels of output power with very high optical-to-optical efficiency.

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