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Proceedings Paper

Polarization-controlled single-mode photonic-crystal VCSEL
Author(s): Tian Cao; Chen Xu; Simin Wei; Yiyang Xie; Mingming Mao
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Paper Abstract

We investigated photonic crystal vertical cavity surface emitting laser with elliptical air holes,which can produce a circular beam with standard substrates in a relatively easy fabrication process.Because of the elliptical air holes,the mutually perpendicular directions of photonic crystal have different effective index,the photonic crystal cavity has highly birefringent.Normal photonic crystal VCSELs send single mode laser,and the basic mode was orthogonal double degennerate state.The polarized direction could change easily.If we used elliptical air holes to break the symmetric structure of photonic crystal,because of the highly birefringent,one of polarization modes was frustrated,only one polarized mode could transmit.We introduced elliptical air holes in the top mirror and get polarization controlled laser.The spacing between air holes was 4μm and the dimentions of the elliptical air holes were 2.0μm×1.4μm.The polarization controlled photonic crystal vertical-cavity surface-emitting laser shows side mode suppression ratio(SMSR) over 30dB,and controlled the polarization of laser in one direction.

Paper Details

Date Published: 22 February 2012
PDF: 8 pages
Proc. SPIE 8333, Photonics and Optoelectronics Meetings (POEM) 2011: Optoelectronic Devices and Integration, 83330L (22 February 2012); doi: 10.1117/12.917679
Show Author Affiliations
Tian Cao, Beijing Univ. of Technology (China)
Chen Xu, Beijing Univ. of Technology (China)
Simin Wei, Beijing Univ. of Technology (China)
Yiyang Xie, Beijing Univ. of Technology (China)
Mingming Mao, Beijing Univ. of Technology (China)

Published in SPIE Proceedings Vol. 8333:
Photonics and Optoelectronics Meetings (POEM) 2011: Optoelectronic Devices and Integration
Erich Kasper; Jinzhong Yu; Xun Li; Xinliang Zhang; Jinsong Xia; Junhao Chu; Zhijiang Dong; Bin Hu; Yan Shen, Editor(s)

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