Single mode high-contrast subwavelength grating vertical cavity surface emitting lasers

被引：44
|
作者：
Huang, Michael C. Y. [1 ]
Zhou, Ye [1 ]
Chang-Hasnain, Connie J. [1 ]
机构：
[1] Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 USA
来源：
APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 17期
关键词：
D O I：
10.1063/1.2917447
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We present a single mode vertical-cavity surface-emitting laser (VCSEL) utilizing a single-layer, high-contrast subwavelength grating (HCG) based top mirror, which provides both the ultrahigh reflectivity and lateral transverse modes control. Experimentally, we demonstrate that merely 11 HCG stripes with a thickness of 230 nm are required to achieve lasing operation. The finite area of HCG, in combination with an oxide aperture of 2-6 mu m, effectively discriminates the higher-order transverse modes in VCSELs with a side mode suppression ratio of >= 40 dB. Furthermore, a single (first high-order transverse) mode, high output power of 2.3 mW laser was achieved from a VCSEL with a 10 mu m oxide aperture. (C) 2008 American Institute of Physics.
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页数：3
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