High-efficiency, 154 W CW, diode-pumped Raman fiber laser with brightness enhancement

被引：66

作者：

Glick, Yaakov ^{[1
,2
]}

Fromzel, Viktor ^{[1
]}

Zhang, Jun ^{[1
]}

Ter-Gabrielyan, Nikolay ^{[1
]}

Dubinskii, Mark ^{[1
]}

机构：

[1] US Army Res Lab, 2800 Powder Mill Rd, Adelphi, MD 20783 USA

[2] Soreq Nucl Res Ctr, Div Appl Phys, Laser Dept, IL-81800 Yavne, Israel

来源：

APPLIED OPTICS | 2017年 / 56卷 / 03期

关键词：

HIGH-POWER;

D O I：

10.1364/AO.56.000B97

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate a high-power, high-efficiency Raman fiber laser pumped directly by laser diode modules at 978 nm. 154 W of CW power were obtained at a wavelength of 1023 nm with an optical to optical efficiency of 65%. A commercial graded-index (GRIN) core fiber acts as the Raman fiber in a power oscillator configuration, which includes spectral selection to prevent generation of the second Stokes. In addition, brightness enhancement of the pump beam by a factor of 8.4 is attained due to the Raman gain distribution profile in the GRIN fiber. To the best of our knowledge this is the highest power and highest efficiency Raman fiber laser demonstrated in any configuration allowing brightness enhancement (i.e., in either cladding-pumped configuration or with GRIN fibers, excluding step-index core pumped), regardless of pumping scheme (i.e., either diode pumped or fiber laser pumped). (C) 2016 Optical Society of America

引用

页码：B97 / B102

页数：6

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