954 nm Raman fiber laser with multimode laser diode pumping

被引：29
|
作者：
Zlobina, E. A. [1 ]
Kablukov, S. I. [1 ]
Skvortsov, M. I. [1 ]
Nemov, I. N. [1 ]
Babin, S. A. [1 ,2 ]
机构：
[1] Russian Acad Sci, Siberian Branch, Inst Automat & Electrometry, 1 Ac Koptyug ave, Novosibirsk 630090, Russia
[2] Novosibirsk State Univ, 2 Pirogova Str, Novosibirsk 630090, Russia
来源：
LASER PHYSICS LETTERS | 2016年 / 13卷 / 03期
基金：
俄罗斯科学基金会;
关键词：
fiber optics; Raman laser; graded-index fiber; clean-up effect; laser diode pumping;
D O I：
10.1088/1612-2011/13/3/035102
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
CW Raman fiber laser emitting at 954 nm under direct pumping by a high-power multimode laser diode at 915 nm is demonstrated. A cavity of the laser is formed with 2.5 km-long multimode graded-index fiber and two mirrors: highly reflective fiber Bragg grating (FBG) at one side and normally cleaved fiber end at the other side. The laser generates low-index transverse modes at the Stokes wavelength with output power above 4 W at a slope efficiency above 40%. It is shown that utilization of a narrowband FBG mirror with low reflectivity instead of the cleaved fiber end with Fresnel reflection leads to stronger spectral mode selection, but the generated power is reduced in this case.
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页数：5
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