Room temperature polariton lasers based on GaN microcavities
Room temperature polariton lasers based on GaN microcavities
The critical temperature for Bose condensation of exciton polaritons in an AlGaN microcavity containing 9 GaN quantum wells is calculated to be T = 460 K. We have modeled the kinetics of polaritons in such a microcavity device using the two-dimensional Boltzmann equation. Room-temperature lasing is found with a threshold as small as 100 mW. The kinetic blocking of polariton relaxation that prevents formation of the Bose-condensed phase of polaritons at low temperatures disappears at high temperatures, especially in n-doped samples. Thus, GaN microcavities are excellent candidates for realization of room-temperature polariton lasers.
412-414
Malpuech, G.
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Di Carlo, A.
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Kavokin, A.
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Baumberg, J.J.
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Zamfirescu, M.
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Lugli, P.
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15 July 2002
Malpuech, G.
da5f02e8-b721-4a4b-a3fc-cb756b396e4a
Di Carlo, A.
23e68b02-6ca1-4d4d-a0b5-7cf2f8cf9415
Kavokin, A.
70ffda66-cfab-4365-b2db-c15e4fa1116b
Baumberg, J.J.
78e1ea7e-8c70-404c-bf84-59aafe75cd07
Zamfirescu, M.
fd5c8daf-395b-4831-901b-25bee04f75c2
Lugli, P.
c05ee1c6-28d5-448c-ae35-e0c0aefa9bda
Malpuech, G., Di Carlo, A., Kavokin, A., Baumberg, J.J., Zamfirescu, M. and Lugli, P.
(2002)
Room temperature polariton lasers based on GaN microcavities.
Applied Physics Letters, 81 (3), .
(doi:10.1063/1.1494126).
Abstract
The critical temperature for Bose condensation of exciton polaritons in an AlGaN microcavity containing 9 GaN quantum wells is calculated to be T = 460 K. We have modeled the kinetics of polaritons in such a microcavity device using the two-dimensional Boltzmann equation. Room-temperature lasing is found with a threshold as small as 100 mW. The kinetic blocking of polariton relaxation that prevents formation of the Bose-condensed phase of polaritons at low temperatures disappears at high temperatures, especially in n-doped samples. Thus, GaN microcavities are excellent candidates for realization of room-temperature polariton lasers.
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Published date: 15 July 2002
Identifiers
Local EPrints ID: 256685
URI: http://eprints.soton.ac.uk/id/eprint/256685
ISSN: 0003-6951
PURE UUID: 53ab29c8-53e9-428f-b6f6-14ea3a5af62b
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Date deposited: 18 Jul 2002
Last modified: 14 Mar 2024 05:46
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Author:
G. Malpuech
Author:
A. Di Carlo
Author:
J.J. Baumberg
Author:
M. Zamfirescu
Author:
P. Lugli
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