Effective suppression of beam divergence for a high-power laser diode bar by an external-cavity technique

被引：34

作者：

Gao, X ^{[1
]}

Zheng, YJ ^{[1
]}

Kan, HF ^{[1
]}

Shinoda, K ^{[1
]}

机构：

[1] Hamamatus Photon KK, Cent Res Lab, Shizuoka 4348601, Japan

来源：

OPTICS LETTERS | 2004年 / 29卷 / 04期

关键词：

D O I：

10.1364/OL.29.000361

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We describe effective suppression of beam divergence for a high-power laser diode bar by use of an external-cavity technique. Nineteen off-axis external-cavity laser diodes of the high-power laser diode are formed by feedback with a stripe mirror. At three times the threshold current, the diverging angle (1/e(2)) of the external-cavity laser diode bar is reduced to 1.5degrees from 6.6degrees (free running) with 14.1-W peak output power and 70.4% of the radiated power of the free-running state without the external cavity. This technique effectively improves the beam quality of the high-power laser diode bar. (C) 2004 Optical Society of America.

引用

页码：361 / 363

页数：3

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