Beam steering in narrow-stripe high-power 980-nm laser diodes

被引：19

作者：

Herzog, WD ^{[1
]}

Goldberg, BB ^{[1
]}

Ünlü, MS ^{[1
]}

机构：

[1] Boston Univ, Dept Phys, Dept Elect & Comp Engn, Photon Ctr, Boston, MA 02215 USA

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2000年 / 12卷 / 12期

基金：

美国国家科学基金会;

关键词：

beam steering; fiber amplifiers; optical waveguides; semiconductor lasers; semiconductor waveguides;

D O I：

10.1109/68.896321

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We used near-held scanning optical microscopy to measure the optical beam characteristics of weakly-guided narrow-stripe high-power laser diodes. For both facets of the device, we correlate changes in the near-field optical characteristics with beam steering and the kink in the light output versus operating current curve. Our measurements demonstrate that: 1) freqeuncy-locking of lateral modes exists for operating currents below the kink in the L-I curve; 2) beam steering is a result of a shift of in the beat-length pattern inside the laser cavity of the frequency-locked lateral modes; and 3) the kink in the L-I curve results from a sudden increase in the beam waist of the guided-modes.

引用

页码：1604 / 1606

页数：3

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