High-power linearly-polarized single-frequency thulium-doped fiber master-oscillator power-amplifier

被引：37
|
作者：
Pearson, L. [1 ]
Kim, J. W. [1 ]
Zhang, Z. [1 ]
Ibsen, M. [1 ]
Sahu, J. K. [1 ]
Clarkson, W. A. [1 ]
机构：
[1] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England
来源：
OPTICS EXPRESS | 2010年 / 18卷 / 02期
基金：
英国工程与自然科学研究理事会;
关键词：
2; MU-M; LASERS; TM; NM;
D O I：
10.1364/OE.18.001607
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report a high power narrow-linewidth source at similar to 2 mu m based on a Tm-doped fiber distributed-feedback master-oscillator and three Tm fiber amplifier stages. The master-oscillator and first two amplifier stages were in-band pumped by Er, Yb fiber lasers operating at 1565 nm, and the final stage amplifier was cladding-pumped at 795 nm by two spatially-combined diode-stacks. The MOPA yielded 100 W of single frequency output at 1943 nm with a beam propagation factor (M-2) of 1.25 and with a polarization extinction ratio of >94%. The output power was limited by thermally-induced damage in the final amplifier stage. The prospects for further power scaling are considered. (C) 2010 Optical Society of America
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页码：1607 / 1612
页数：6
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