Efficient, high-brightness wavelength-beam-combined commercial off-the-shelf diode stacks achieved by use of a wavelength-chirped volume Bragg grating

被引：46

作者：

Chann, B

Goyal, AK

Fan, TY

Sanchez-Rubio, A

Volodin, BL

Ban, VS

机构：

[1] MIT, Lincoln Lab, Lexington, MA 02420 USA

[2] PD LD Inc, Pennington, NJ 08550 USA

来源：

OPTICS LETTERS | 2006年 / 31卷 / 09期

关键词：

D O I：

10.1364/OL.31.001253

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report a method of scaling the spatial brightness from commercial off-the-shelf diode laser stacks through wavelength beam combining, by use of a linearly wavelength-chirped volume Bragg grating (VBG). Using a three-bar commercial stack of broad-area lasers and a VBG, we demonstrate 89.5 Wcw of beam-combined output with a beam-combining efficiency of 75%. The output beam has a propagation factor M-2 similar to 26 on the slow axis and M-2 similar to 21 on the fast axis. This corresponds to a brightness of similar to 20 MW/cm(2)sr. To our knowledge, this is the highest brightness broad-area diode laser system. We achieve 81% coupling efficiency into a 100 mu m, 0.22 N.A. fiber. (c) 2006 Optical Society of America.

引用

页码：1253 / 1255

页数：3

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