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

页码：15970 / 15979

页数：10

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