Temporally and spatially shaped fully-fiberized ytterbium-doped pulsed MOPA

被引：12

作者：

Lin, D. ^{[1
]}

Alam, S. U. ^{[1
]}

Malinowski, A. ^{[1
]}

Chen, K. K. ^{[1
]}

Hayes, J. R. ^{[1
]}

Flannagan, J. C. ^{[1
]}

Geddes, V. ^{[1
]}

Nilsson, J. ^{[1
]}

Ingram, S. ^{[2
]}

Norman, S. ^{[2
]}

Richardson, D. J. ^{[1
]}

机构：

[1] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England

[2] SPI Lasers UK Ltd, Southampton SO30 2QU, Hants, England

来源：

LASER PHYSICS LETTERS | 2011年 / 8卷 / 10期

关键词：

fiber laser; pulse; ytterbium; OUTPUT POWER; LASER; MODE;

D O I：

10.1002/lapl.201110057

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report a fully-fiberized, pulsed ytterbium-doped master oscillator power amplifier (MOPA) for materials processing applications providing both a temporal pulse and spatial beam shaping capability operating at a maximum average output power of 100W. Adaptive temporal pulse shaping using an in-line electro-optic modulator was incorporated to reduce the impact of dynamic gain saturation and optical Kerr/Raman nonlinearities. The MOPA is capable of generating 2.5 mJ flat-topped optical pulses with 20 kW peak power as well as other user-defined, shaped pulses. Spatial beam shaping is obtained using a pair of axicon (conical) lenses at the end of the beam delivery optic allowing ring shaped output beams to be generated from the otherwise collimated Gaussian output.

引用

页码：747 / 753

页数：7

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