Phase measurement and far-field reconstruction on externally coupled laser diode arrays

被引：0
|
作者：
Niebuhr, Mario [1 ]
Heuer, Axel [1 ]
机构：
[1] Univ Potsdam, Inst Phys & Astron, Expt Quantum Phys, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany
来源：
OPTICS EXPRESS | 2017年 / 25卷 / 13期
关键词：
SEMICONDUCTOR-LASERS; SPATIAL COHERENCE; LINEWIDTH;
D O I：
10.1364/OE.25.014317
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Passive coherent combination of several discrete low power laser diodes is a promising way to overcome the issue of degrading beam quality when scaling single emitters to > 10W output power. Such systems would be an efficient alternative to current high power sources, yet they suffer from fatal coherence loss when operated well above threshold. We present a new way to obtain detailed coherence information for laser diode arrays using a spatial light modulator to help identify the underlying decoherence processes. Reconstruction tests of the emitted far-field distribution are conducted to evaluate the performance of our setup. (C) 2017 Optical Society of America
引用
收藏
页码：14317 / 14322
页数：6
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