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

被引：15

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

页码：7186 / 7193

页数：8

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