Polarization locking of vertical-cavity surface-emitting lasers using amorphous Si subwavelength transmission gratings

Steven J. Schablitsky, Lei Zhuang, Rick C. Shi, Stephen Y. Chou

Research output: Contribution to journalConference article

Abstract

The output light of a vertical-cavity surface-emitting laser (VCSEL) can exist in two linearly polarized modes along the 〈011〉 and the 〈011̄〉 crystal directions (denoted P and P respectively). Under normal operation, one of the modes will dominate over the other and, depending on the injection current, switching between the two modes can occur. Efforts have been made to control the polarization by use of anisotropic transverse cavity geometry, stress from an elliptical window, asymmetrical active layers, and metal gratings as the bottom reflector. This paper reports the first demonstration of locking the polarization of VCSELs by putting a ultrathin amorphous silicon subwavelength transmission grating in front of the output window of a VCSEL.

Original languageEnglish (US)
Pages (from-to)361-362
Number of pages2
JournalConference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS
StatePublished - Jan 1 1996
Externally publishedYes
EventProceedings of the 1996 Conference on Lasers and Electro-Optics, CLEO'96 - Anaheim, CA, USA
Duration: Jun 2 1996Jun 7 1996

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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