Pugh, J. R., Ho, Y-L. D., Heard, P. J., Nash, G. R., Ashley, Tim, Rarity, J. G. and Cryan, M. J. (2009) Design and fabrication of a midinfrared photonic crystal defect cavity in indium antimonide. Journal of Optics A: Pure and Applied Optics, Volume 11 (Number 5). Article number 054006. doi:10.1088/1464-4258/11/5/054006 ISSN 1464-4258.

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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.

Item Type:	Journal Article
Divisions:	Faculty of Science, Engineering and Medicine > Engineering > Engineering
Journal or Publication Title:	Journal of Optics A: Pure and Applied Optics
Publisher:	Institute of Physics Publishing Ltd.
ISSN:	1464-4258
Official Date:	18 March 2009
Dates:	Date Event 18 March 2009 Published
Volume:	Volume 11
Number:	Number 5
Article Number:	Article number 054006
DOI:	10.1088/1464-4258/11/5/054006
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access

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