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Please use this identifier to cite or link to this item: http://hdl.handle.net/2262/49310

Title: Acceptance angle influence on optimum incident spot size for high-finesse microcavity two-photon absorption photodetectors
Author: GUO, WEI-HUA
BRADLEY, LOUISE
LYNCH, MICHAEL
DONEGAN, JOHN FRANCIS
Sponsor: Science Foundation Ireland
Author's Homepage: http://people.tcd.ie/bradlel
http://people.tcd.ie/guow
http://people.tcd.ie/lynchmi
http://people.tcd.ie/jdonegan
Keywords: Optics
microcavities
photodetectors
Issue Date: 2009
Citation: J. O'Dowd, W.-H. Guo, M. Lynch, A. L. Bradley and J.F. Donegan,, Acceptance angle influence on optimum incident spot size for high-finesse microcavity two-photon absorption photodetectors, IEEE Jourrnal of Quantum Electronics, 45, 12, 2009, 1584 - 1589
Series/Report no.: IEEE Jourrnal of Quantum Electronics
45
12
Abstract: The influence of the limited acceptance angle of a high-finesse microcavity two-photon absorption photodetector on its response has been investigated. It is shown that the limited acceptance angle of the microcavity explains the observed asymmetry seen in the spectral dependence of the microcavity. The theory describing the influence of the acceptance angle allows for an optimum incident beam waist for any cavity structure to be calculated, with an optimum spot diameter of 7μm having been calculated for the microcavity under test. The theory also enables the calculation of an optimum incident spot size for any microcavity. It is shown that a cavity with higher overall reflectivity require larger input spot sizes in order to optimize the level of generated two-photon absorption.
Description: PUBLISHED
URI: http://hdl.handle.net/2262/49310
Related links: http://dx.doi.org/10.1109/JQE.2009.2022760
Appears in Collections:Physics (Scholarly Publications)

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