Design and fabrication of a midinfrared photonic crystal defect cavity in indium antimonide

MJ Cryan, JR Pugh, Y-LD Ho, PJ Heard, GR Nash, T Ashley, JG Rarity

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

Abstract

This paper discusses the design and optimisation of a two-dimensional photonic crystal membrane defect cavity for use as a laser in gas sensing and communications applications in the 3-4µm wavelength range. The design is based on a modified L3 cavity in an aluminium-indium-gallium-antimonide membrane structure which contains two strained quantum wells. A detailed study of Q factor for different thicknesses and hole positions is carried out and peak emission is predicted at a wavelength of 3.372µm with a Q factor of 26233 for an optimised membrane thickness of 1000nm. A focused ion beam procedure is described for creating the membrane directly in a Fabry-Perot laser structure. A membrane is fabricated and the photonic crystal pattern is etched into the membrane.
Translated title of the contributionDesign and fabrication of a midinfrared photonic crystal defect cavity in indium antimonide
Original languageEnglish
Title of host publication2nd International Conference on Metamaterials, Photonic Crystals and Plasmonics (META), Cairo, Egypt
Publication statusPublished - 25 Feb 2010

Fingerprint Dive into the research topics of 'Design and fabrication of a midinfrared photonic crystal defect cavity in indium antimonide'. Together they form a unique fingerprint.

Cite this