Mode switching of high index contrast photonic crystal surface emitting lasers

Kuo Bin Hong, Chun Chieh Yang, Tien-chang Lu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

This paper investigates the phenomenon of mode switching for GaAs-based high index contrast photonic crystal surface emitting lasers (PCSELs) with deeply etched air holes. The room-temperature lasing characteristics and angular resolved photoluminescence spectra of PCSELs show that the lasing mode would change from the fundamental guided mode to a high-order guided mode as the filling factor (FF) increased, resulting from the diffraction of deeply etched semiconductor/air arrays with high index contrast. Higher order guided modes could coherently couple out of photonic crystal and would significantly influence the laser output of PCSELs with a larger air FF, leading to rich far-field characteristics.

Original languageEnglish
Article number6400205
JournalIEEE Journal of Quantum Electronics
Volume52
Issue number5
DOIs
StatePublished - 1 May 2016

Keywords

  • GaAs
  • guided waves
  • photonic crystals

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