Lasing in hybrid metal-Bragg nanocavities

You, Jong-Bum, Kwon, Kyungmook, Lee, Wook-Jae ORCID: https://orcid.org/0000-0001-8430-4797, Shim, Jaeho, Won, Dongshik, Jung, Youngho, Park, Byounghun and Yu, Kyoungsik 2013. Lasing in hybrid metal-Bragg nanocavities. Optics Letters 38 (10) , pp. 1694-1696. 10.1364/OL.38.001694

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Abstract

We report room-temperature lasing from an optically pumped subwavelength-scale cylindrical InGaAsP pillar surrounded by circular Bragg reflectors on a metal substrate with a dielectric spacer layer. By taking advantage of wide in-plane photonic bandgaps and proper vertical antiresonances, three dielectric Bragg pairs produce a sufficient optical feedback capable of low threshold lasing from the fundamental TE011 mode. A large spontaneous emission coupling into the lasing mode is obtained from the cavity-enhanced Purcell effects and effective suppression of nonlasing modes.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Physics and Astronomy
Subjects:	Q Science > QC Physics
ISSN:	0146-9592
Date of Acceptance:	15 April 2013
Last Modified:	01 Nov 2022 09:56
URI:	https://orca.cardiff.ac.uk/id/eprint/89703

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