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

J R Pugh, Y-L D Ho, P J Heard, G. R. Nash, T Ashley, J. G. Rarity, Martin J. Cryan

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8 Citations (Scopus)

Abstract

Simulation results and fabrication details are presented for a two-dimensional photonic crystal membrane defect cavity for use as a laser in gas sensing and communications applications in the 3–4 µm 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. Peak emission is predicted at λ = 3.372 µm with a Q factor of 26 233 for an optimized membrane thickness of 1000 nm. A focused ion beam procedure is described for creating the membrane directly in a Fabry–Perot laser structure. A 400 nm thick membrane is fabricated and the photonic crystal pattern is etched into the membrane.
Original languageEnglish
Article number054006
Number of pages10
JournalJournal of Optics (United Kingdom)
Volume11
Issue number5
Early online date18 Mar 2009
DOIs
Publication statusPublished - 1 May 2009
Externally publishedYes

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