Gain-switched all-fiber laser with narrow bandwidth

被引：18
|
作者：
Larsen, C. [1 ]
Giesberts, M. [2 ]
Nyga, S. [2 ]
Fitzau, O. [2 ]
Jungbluth, B. [2 ]
Hoffmann, H. D. [2 ]
Bang, O. [1 ,3 ]
机构：
[1] Tech Univ Denmark, Dept Photon Engn, DTU Foton, DK-2800 Lyngby, Denmark
[2] Fraunhofer Inst Lasertechnol, D-52074 Aachen, Germany
[3] NKT Photon AS, DK-3460 Birkerod, Denmark
来源：
OPTICS EXPRESS | 2013年 / 21卷 / 10期
关键词：
Pulse repetition rate - Cost effectiveness - Fibers - Optical pumping - Bandwidth - Frequency doublers - Power amplifiers;
D O I：
10.1364/OE.21.012302
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Gain-switching of a CW fiber laser is a simple and cost-effective approach to generate pulses using an all-fiber system. We report on the construction of a narrow bandwidth (below 0.1 nm) gain-switched fiber laser and optimize the pulse energy and pulse duration under this constraint. The extracted pulse energy is 20 mu J in a duration of 135 ns at 7 kHz. The bandwidth increases for a higher pump pulse energy and repetition rate, and this sets the limit of the output pulse energy. A single power amplifier is added to raise the peak power to the kW-level and the pulse energy to 230 mu J while keeping the bandwidth below 0.1 nm. This allows frequency doubling in a periodically poled lithium tantalate crystal with a reasonable conversion efficiency. (C)2013 Optical Society of America
引用
收藏
页码：12302 / 12308
页数：7
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