Spectral properties and modes of surface microcavities
Spectral properties and modes of surface microcavities
We measure experimentally the spatial intensity profiles and resonant frequencies of the transverse modes of nearly hemispherical microcavities for a range of cavity lengths and mirror curvatures. The experimental mode profiles are radially symmetric Gauss-Laguerre modes, but do not posses the radial frequency degeneracies typical of Gauss-Laguerre modes in large-scale optical cavities. We use a paraxial model of cavity propagation to interpret the experimental results. In particular, we show that the lifting of the radial frequency degeneracy may be due to the strength of spherical aberration in wavelength-scale microcavities.
optical microcavities, gauss-laguerre modes, gold microcavities
043822-[12pp.]
Pennington, R.C.
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D'Alessandro, G.
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Baumberg, J.J.
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Kaczmarek, M.
408ec59b-8dba-41c1-89d0-af846d1bf327
22 April 2009
Pennington, R.C.
0ef662cb-2d98-4c01-b352-84afc182aec9
D'Alessandro, G.
bad097e1-9506-4b6e-aa56-3e67a526e83b
Baumberg, J.J.
78e1ea7e-8c70-404c-bf84-59aafe75cd07
Kaczmarek, M.
408ec59b-8dba-41c1-89d0-af846d1bf327
Pennington, R.C., D'Alessandro, G., Baumberg, J.J. and Kaczmarek, M.
(2009)
Spectral properties and modes of surface microcavities.
Physical Review A, 79 (4), .
(doi:10.1103/PhysRevA.79.043822).
Abstract
We measure experimentally the spatial intensity profiles and resonant frequencies of the transverse modes of nearly hemispherical microcavities for a range of cavity lengths and mirror curvatures. The experimental mode profiles are radially symmetric Gauss-Laguerre modes, but do not posses the radial frequency degeneracies typical of Gauss-Laguerre modes in large-scale optical cavities. We use a paraxial model of cavity propagation to interpret the experimental results. In particular, we show that the lifting of the radial frequency degeneracy may be due to the strength of spherical aberration in wavelength-scale microcavities.
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Published date: 22 April 2009
Keywords:
optical microcavities, gauss-laguerre modes, gold microcavities
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Local EPrints ID: 66108
URI: http://eprints.soton.ac.uk/id/eprint/66108
ISSN: 1050-2947
PURE UUID: f1e8cae7-2743-4f68-b09f-39fa70a59814
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Date deposited: 30 Apr 2009
Last modified: 14 Mar 2024 02:38
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Author:
R.C. Pennington
Author:
J.J. Baumberg
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