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Cavity-enhanced optical bottle beam as a mechanical amplifier

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.
1050-2947
013413-[8pp]
Freegarde, Tim
01a5f53b-d406-44fb-a166-d8da9128ea7d
Dholakia, Kishan
c649b0a9-ab68-4571-b8c7-e84553d14174
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), 013413-[8pp]. (doi:10.1103/PhysRevA.66.013413).

Record type: Article

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

Identifiers

Local EPrints ID: 14824
URI: http://eprints.soton.ac.uk/id/eprint/14824
ISSN: 1050-2947
PURE UUID: 5c5cdea8-27d6-469d-a9b3-ae80697a3a2c
ORCID for Tim Freegarde: ORCID iD orcid.org/0000-0002-0680-1330

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Date deposited: 04 Mar 2005
Last modified: 07 Oct 2020 04:14

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