High-performance small vertical-cavity lasers: A comparison of measured improvements in optical and current confinement in devices using tapered apertures

被引:34
作者
Hegblom, ER [1 ]
Margalit, NM [1 ]
Fiore, A [1 ]
Coldren, LA [1 ]
机构
[1] Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA
关键词
current spreading; oxide apertures; optical scattering; semiconductor lasers; surface-emitting lasers;
D O I
10.1109/2944.788418
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 analyze the scaling characteristics of the optical and current confinement for three different vertical-cavity surface-emitting laser (VCSEL) structures with tapered apertures. The improvements in scaling have allowed devices with apertures <3 mu m to have wall-plug efficiencies over 20% at output powers as low as 150 mu W. The combination of low threshold (<200 mu A), single modedness, and good wall-plug efficiency even at low output powers makes these devices excellent candidates for short distance (<1 m) interconnects within computers.
引用
收藏
页码:553 / 560
页数:8
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