High-power master-oscillator power-amplifier with optical vortex output

被引：29
|
作者：
Kim, D. J. [1 ]
Kim, J. W. [1 ]
Clarkson, W. A. [2 ]
机构：
[1] Hanyang Univ, Dept Appl Phys, Ansan 426791, Gyeonggi Do, South Korea
[2] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England
来源：
APPLIED PHYSICS B-LASERS AND OPTICS | 2014年 / 117卷 / 01期
基金：
新加坡国家研究基金会;
关键词：
ORBITAL ANGULAR-MOMENTUM; LASER; BEAMS;
D O I：
10.1007/s00340-014-5855-5
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A high-power master-oscillator power-amplifier with optical vortex output is reported. The master oscillator for an optical vortex seed beam is a simple two-mirror Nd:YAG laser using a fiber-based pump beam conditioning scheme. The seed is amplified in a double-clad multimode fiber amplifier end-pumped by a high-power diode laser at 975 nm yielding 10.7 W of continuous-wave output at 1064 nm in the first-order Laguerre-Gaussian beam with M (2) a parts per thousand 2.11 for an absorbed pump power of 17.5 W, corresponding to a slope efficiency of similar to 59 %. The ring-shaped intensity profile and the wave front handedness of the seed beam were well preserved in the fiber amplifier. The prospects of power scaling via this approach are discussed.
引用
收藏
页码：459 / 464
页数：6
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