High-efficiency cascaded Raman fiber laser with random distributed feedback

被引：66
|
作者：
Babin, S. A. [1 ,2 ]
Vatnik, I. D. [1 ]
Laptev, A. Yu. [3 ]
Bubnov, M. M. [4 ]
Dianov, E. M. [4 ]
机构：
[1] Inst Automat & Electrometry SB RAS, Novosibirsk 630090, Russia
[2] Novosibirsk State Univ, Novosibirsk 630090, Russia
[3] Inst Chem High Pur Subst RAS, Nizhnii Novgorod 603950, Russia
[4] Fiber Opt Res Ctr RAS, Moscow, Russia
来源：
OPTICS EXPRESS | 2014年 / 22卷 / 21期
基金：
俄罗斯科学基金会;
关键词：
CAVITY;
D O I：
10.1364/OE.22.024929
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Cascaded lasing provided by Raman gain (at 1115-nm pumping) and random distributed feedback (via Rayleigh backscattering) in a 1.65-km phosphosilicate fiber is studied. Output power for the second Stokes component (1398 nm) exceeds 5W at pump power of 11 W. In contrast to conventional cascaded Raman laser with high-Q cavity for the intermediate first Stokes component, there is no cavity here and no cavity losses, correspondingly. Longitudinal power distribution is shown to be quite different also. As a result, the efficiency of pump to 2nd Stokes wave conversion is not influenced by the intermediate stage and depends only on the integral attenuation in the fiber. Herewith, the number of generated 2nd Stokes photons at the output may even exceed the absorbed pump photons due to the lower attenuation of Stokes waves. (C) 2014 Optical Society of America
引用
收藏
页码：24929 / 24934
页数：6
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