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Purcell factor enhanced scattering efficiency in optical microcavities

Kippenberg, T. J. and Tchebotareva, A. L. and Kalkman, J. and Polman, A. and Vahala, K. J. (2005) Purcell factor enhanced scattering efficiency in optical microcavities. . (Submitted)

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Scattering processes in an optical microcavity are investigated for the case of silicon nanocrystals embedded in an ultra-high Q toroid microcavity. Using a novel measurement technique based on the observable mode-splitting, we demonstrate that light scattering is highly preferential: more than 99.8% of the scattered photon flux is scattered into the original doubly-degenerate cavity modes. The large capture efficiency is attributed to an increased scattering rate into the cavity mode, due to the enhancement of the optical density of states over the free space value and has the same origin as the Purcell effect in spontaneous emission. The experimentally determined Purcell factor amounts to 883.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Kippenberg, T. J.0000-0002-3408-886X
Polman, A.0000-0002-0685-3886
Vahala, K. J.0000-0003-1783-1380
Additional Information:We thank Prof. S. Roorda (Université de Montréal) for Si ion implantation. This work was funded by the DARPA, the NSF, and the Caltech Lee Center. The Dutch part of this work is part of the research program of FOM, which is financially supported by NWO. A.T. is grateful to the Fonds NATEQ (Québec, Canada) for a postdoctoral scholarship. T.J.K. acknowledges a postdoctoral scholarship from the IST-CPI. The authors acknowledge Dr. Oskar Painter for valuable discussions.
Funding AgencyGrant Number
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
Caltech Lee Center for Advanced NetworkingUNSPECIFIED
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)UNSPECIFIED
Fonds Québécois de Recherche en Nature et Technologies (FQRNT)UNSPECIFIED
Caltech Center for the Physics of InformationUNSPECIFIED
Classification Code:PACS: 42.65Yj, 42.55-Sa, 42.65-Hw
Record Number:CaltechAUTHORS:20160608-152404236
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:67785
Deposited By: Tony Diaz
Deposited On:09 Jun 2016 00:31
Last Modified:09 Mar 2020 13:19

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