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

页码：12302 / 12308

页数：7

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