Pulsed operation of a resonantly pumped, linearly polarised, large mode area holmium-doped fibre amplifier

被引:14
|
作者
Hemming, Alexander [1 ]
Richards, Jim [2 ]
Simakov, Nikita [1 ]
Davidson, Alan [1 ]
Carmody, Neil [1 ]
Haub, John [1 ]
Carter, Adrian [3 ]
机构
[1] Def Sci & Technol Org, Cyber & Elect Warfare Div, Edinburgh, SA 5111, Australia
[2] Bob Seymour & Associates Pty Ltd, Hallett Cove, SA 5158, Australia
[3] Nufern Inc, East Granby, CT 06026 USA
来源
OPTICS EXPRESS | 2014年 / 22卷 / 06期
关键词
LASER; ENERGY;
D O I
10.1364/OE.22.007186
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We present the design of a polarisation maintaining, resonantly and cladding pumped, large mode area holmium-doped fibre. We describe the operation of this fibre in a pulsed amplifier configuration. The amplifier produced pulses with energy of 2.25 mJ and duration of 20 ns at a repetition rate of 20 kHz and average power of 45 W. The holmium-doped fibre provided > 10 dB of gain at 2.09 mu m and the polarisation extinction ratio was > 11.5 dB. The beam quality of the output (M-2) was 1.6. To the best of our knowledge this is the highest pulse energy achieved from any singly holmium-doped fibre by an order of magnitude. (c) 2014 Optical Society of America
引用
收藏
页码:7186 / 7193
页数:8
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