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Reduced threshold in pierced semiconductor microdisk lasers

Backes, S.A., Cleaver, J.R.A., Heberle, A.P., Baumberg, J.J. and Köhler, K. (1999) Reduced threshold in pierced semiconductor microdisk lasers Applied Physics Letters, 74, (2), pp. 176-178. (doi:10.1063/1.123285).

Record type: Article


GaAs microdisk lasers with holes pierced through the disk surface are investigated for their threshold characteristics. Disks are fabricated with either a single hole or two diametrically opposite holes at various distances from the disk outer edge. Even though the disk area is reduced by only 1%, we find that the lasing threshold for a disk with one hole is reduced by up to 50% compared to a disk with no hole. We attribute this reduction to the perturbation of nonlasing modes, which decreases the amplification of spontaneous emission in these modes and makes more carriers available to contribute to lasing.

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Published date: 1999


Local EPrints ID: 14666
ISSN: 0003-6951
PURE UUID: de3d568d-22e7-49e1-8424-f444c287b9d8

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Date deposited: 23 Feb 2005
Last modified: 17 Jul 2017 16:54

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Author: S.A. Backes
Author: J.R.A. Cleaver
Author: A.P. Heberle
Author: J.J. Baumberg
Author: K. Köhler

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