Diffractive-optics-based beam combination of a phase-locked fiber laser array

被引：125

作者：

Cheung, Eric C. ^{[1
]}

Ho, James G. ^{[1
]}

Goodno, Gregory D. ^{[1
]}

Rice, Robert R. ^{[1
]}

Rothenberg, Josh ^{[1
]}

Thielen, Peter ^{[1
]}

Weber, Mark ^{[1
]}

Wickham, Michael ^{[1
]}

机构：

[1] Northrop Grumman Space Technol, Redondo Beach, CA 90278 USA

来源：

OPTICS LETTERS | 2008年 / 33卷 / 04期

关键词：

D O I：

10.1364/OL.33.000354

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A diffractive optical element (DOE) is used as a beam combiner for an actively phase-locked array of fiber lasers. Use of a DOE eliminates the far-field sidelobes and the accompanying loss of beam quality typically observed in tiled coherent laser arrays. Using this technique, we demonstrated coherent combination of five fiber lasers with 91% efficiency and M-2 = 1.04. Combination efficiency and phase locking is robust even with large amplitude and phase fluctuations on the input laser array elements. Calculations and power handling measurements suggest that this approach can scale to both high channel counts and high powers. (c) 2008 Optical Society of America.

引用

页码：354 / 356

页数：3

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