Array size scalability of passively coherently phased fiber laser arrays

被引：32

作者：

Chang, Wei-zung ^{[1
]}

Wu, Tsai-wei ^{[1
]}

Winful, Herbert G. ^{[1
]}

Galvanauskas, Almantas ^{[1
]}

机构：

[1] Univ Michigan, Ctr Ultrafast Opt Sci, Ann Arbor, MI 48109 USA

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 09期

关键词：

BEAM;

D O I：

10.1364/OE.18.009634

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We explore, by means of experiments and simulation, the power combining efficiency and power fluctuation of coherently phased 2, 4, 6, 8, 10, 12, 14, 16-channel fiber-laser arrays using fused 50: 50 single-mode couplers. The measured evolution of power combining efficiency with array size agrees with simulations based on a new propagation model. For our particular system the power fluctuations due to small wavelength-scale length variations are seen to scale with array size as N-3. Beat spectra support the notion that a lack of coherently-combined supermodes in arrays of increasing size leads to a decrease in combined-power efficiency. (C) 2010 Optical Society of America

引用

页码：9634 / 9642

页数：9

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