Brillouin scattering spectra in high-power single-frequency ytterbium doped fiber amplifiers

被引：88
|
作者：
Hildebrandt, Matthias [1 ,2 ]
Buesche, Sebastian [1 ]
Wessels, Peter [1 ,2 ]
Frede, Maik [1 ,2 ]
Kracht, Dietmar [1 ,2 ]
机构：
[1] Laser Zentrum Hannover eV, D-30419 Hannover, Germany
[2] QUEST, Ctr Quantum Engn & Space Time Res, D-30167 Hannover, Germany
来源：
OPTICS EXPRESS | 2008年 / 16卷 / 20期
关键词：
D O I：
10.1364/OE.16.015970
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report on theoretical and experimental investigations on spontaneous and stimulated Brillouin scattering during operation of a high-power single-frequency polarization-maintaining ytterbium doped fiber amplifier. For different amplifier configurations with co- and counter-propagating seed and pump radiation the evolution of Brillouin scattering spectra was investigated with a heterodyne detection scheme. Spontaneous Brillouin gain spectra at low powers were additionally investigated using a pump-probe technique. The data obtained from these experiments have been compared with a theoretical model based on coupled intensity equations. A Brillouin scattering suppression has been investigated theoretically and experimentally with externally applied temperature gradients along the fiber resulting in up to 3.5 dB suppression and 115 W of amplifier output power. (C) 2008 Optical Society of America
引用
收藏
页码：15970 / 15979
页数：10
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