Cavity-enhanced optical bottle beam as a mechanical amplifier
Cavity-enhanced optical bottle beam as a mechanical amplifier
We analyze the resonant cavity enhancement of a hollow "optical bottle beam" for the dipole-force trapping of dark-field-seeking species. We first improve upon the basic bottle beam by adding further Laguerre-Gaussian components to deepen the confining potential. Each of these components itself corresponds to a superposition of transverse cavity modes, which are then enhanced simultaneously in a confocal cavity to produce a deep optical trap needing only a modest incident power. The response of the trapping field to displacement of the cavity mirrors offers an unusual form of mechanical amplifier in which the Gouy phase shift produces an optical Vernier scale between the Laguerre-Gaussian beam components.
013413-[8pp]
Freegarde, Tim
01a5f53b-d406-44fb-a166-d8da9128ea7d
Dholakia, Kishan
c649b0a9-ab68-4571-b8c7-e84553d14174
2002
Freegarde, Tim
01a5f53b-d406-44fb-a166-d8da9128ea7d
Dholakia, Kishan
c649b0a9-ab68-4571-b8c7-e84553d14174
Freegarde, Tim and Dholakia, Kishan
(2002)
Cavity-enhanced optical bottle beam as a mechanical amplifier.
Physical Review A, 66 (1), .
(doi:10.1103/PhysRevA.66.013413).
Abstract
We analyze the resonant cavity enhancement of a hollow "optical bottle beam" for the dipole-force trapping of dark-field-seeking species. We first improve upon the basic bottle beam by adding further Laguerre-Gaussian components to deepen the confining potential. Each of these components itself corresponds to a superposition of transverse cavity modes, which are then enhanced simultaneously in a confocal cavity to produce a deep optical trap needing only a modest incident power. The response of the trapping field to displacement of the cavity mirrors offers an unusual form of mechanical amplifier in which the Gouy phase shift produces an optical Vernier scale between the Laguerre-Gaussian beam components.
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Published date: 2002
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Local EPrints ID: 14824
URI: http://eprints.soton.ac.uk/id/eprint/14824
ISSN: 1050-2947
PURE UUID: 5c5cdea8-27d6-469d-a9b3-ae80697a3a2c
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Date deposited: 04 Mar 2005
Last modified: 16 Mar 2024 03:35
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Author:
Kishan Dholakia
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