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Demonstration of ultra-high-Q small mode volume toroid microcavities on a chip

Kippenberg, T. J. and Spillane, S. M. and Vahala, K. J. (2004) Demonstration of ultra-high-Q small mode volume toroid microcavities on a chip. Applied Physics Letters, 85 (25). pp. 6113-6115. ISSN 0003-6951.

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Optical microcavities confine light spatially and temporally and find application in a wide range of fundamental and applied studies. In many areas, the microcavity figure of merit is not only determined by photon lifetime (or the equivalent quality-factor, Q), but also by simultaneous achievement of small mode volume (V). Here we demonstrate ultra-high Q-factor small mode volume toroid microcavities on-a-chip, which exhibit a Q/V factor of more than 10^6 (lambda/n)^–3. These values are the highest reported to date for any chip-based microcavity. A corresponding Purcell factor in excess of 200,000 and a cavity finesse of > 2.8×10^6 is achieved, demonstrating that toroid microcavities are promising candidates for studies of the Purcell effect, cavity QED or biochemical sensing.

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Additional Information:©2004 American Institute of Physics (Received 12 July 2004; accepted 16 October 2004) This work was funded by the DARPA, NSF, and the Caltech Lee Center for Advanced Networking.
Funding AgencyGrant Number
Defense Advanced Research Projects Agency (DARPA)UNSPECIFIED
Caltech Lee Center for Advanced NetworkingUNSPECIFIED
Subject Keywords:microcavities; Q-factor; micro-optics; optical sensors; system-on-chip; radiative lifetimes
Record Number:CaltechAUTHORS:KIPapl04
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:6656
Deposited By: Archive Administrator
Deposited On:16 Dec 2006
Last Modified:27 May 2016 21:19

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