NDLI: Phase space engineering in optical microcavities I: Preserving near-field uniformity while inducing far-field directionality

Content Provider	IEEE Xplore Digital Library
Author	Painchaud-April, G. Poirier, J. Gagnon, D. Dubé, L.J.
Copyright Year	2010
Description	Author affiliation: Département de Physique, de Ginie Physique, et d'Optique, Université Laval, Quebec, QC G1V 0A6, Canada (Painchaud-April, G.; Poirier, J.; Gagnon, D.; Dubé, L.J.)
Abstract	Optical microcavities have received much attention over the last decade from different research fields ranging from fundamental issues of cavity QED to specific applications such as microlasers and bio-sensors. A major issue in the latter applications is the difficulty to obtain directional emission of light in the far-field while keeping high energy densities inside the cavity (i.e. high quality factor). To improve our understanding of these systems, we have studied the annular cavity (a dielectric disk with a circular hole), where the distance cavity-hole centers d is used as a parameter to alter the properties of cavity resonances. We present results showing how one can affect the directionality of the far-field while preserving the uniformity (hence the quality factor) of the near-field simply by increasing the value of d. Interestingly, the transition between a uniform near- and far-field to a uniform near- and directional far-field is rather abrupt. We can explain this behavior quite nicely with a simple model, supported by full numerical calculations, and we predict that the effect will also be found in a large class of eigenmodes of the cavity.
Starting Page	1
Ending Page	4
File Size	337736
Page Count	4
File Format	PDF
ISBN	9781424477999
e-ISBN	9781424477982
e-ISBN	9781424477975
DOI	10.1109/ICTON.2010.5548943
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-27
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Microcavities Resonance Optical resonators Q factor Biomedical optical imaging Optical sensors Tunneling Equations Delay Stimulated emission potential/dynamical tunneling annular microcavities microlasers whispering-gallery mode control of directional emission
Content Type	Text
Resource Type	Article

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