EFFECT OF SPATIAL-FILTERING ON THE SPONTANEOUS EMISSION-SPECTRUM OF A SUBTHRESHOLD VCSEL

被引：14

作者：

VANEXTER, MP

VANDOORN, AKJ

WOERDMAN, JP

机构：

[1] Huygens Laboratory, University of Leiden, 2300 RA Leiden

来源：

IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS | 1995年 / 1卷 / 02期

关键词：

D O I：

10.1109/2944.401247

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 have measured the optical spectrum of a vertical-cavity surface-emitting laser (VCSEL) operating below threshold. The spectrum consists of a strongly asymmetric central peak with weak structures in the wings that denote the edges of the DBR stopband. We show that the striking asymmetry of the central resonant part is caused by rays emitted at an angle with respect to the surface normal, The asymmetry can be removed by spatial filtering in the far-field. Analysis of the so obtained Lorentzian spectrum yields the current-dependent cavity loss rate and resonance frequency and thus, provides a new tool to analyze VCSEL's.

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收藏

页码：601 / 605

页数：5

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