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Optics Letters

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  • Vol. 36, Iss. 2 — Jan. 15, 2011
  • pp: 103–105

Highly directional output from long-lived resonances in optical microcavity

Qinghai Song and Hui Cao  »View Author Affiliations


Optics Letters, Vol. 36, Issue 2, pp. 103-105 (2011)
http://dx.doi.org/10.1364/OL.36.000103


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Abstract

We report a simple and robust mechanism that can result in highly directional emission from long-lived resonances in microcavities. By placing a nanoparticle (NP) into the evanescent wave region of microcavities, highly directional outputs with divergence angle 1.9 ° 10 ° can be obtained in single or double directions. The perturbation of NP on evanescent waves preserves the high-quality (Q) factors, and the collimation of microcavities generates the highly directional outputs. Our numerical simulations show that this mechanism is very robust to the size of NP and the refractive index/separation distance/size of microcavities.

© 2011 Optical Society of America

OCIS Codes
(230.3990) Optical devices : Micro-optical devices
(140.3945) Lasers and laser optics : Microcavities

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: October 4, 2010
Revised Manuscript: November 19, 2010
Manuscript Accepted: November 24, 2010
Published: January 5, 2011

Citation
Qinghai Song and Hui Cao, "Highly directional output from long-lived resonances in optical microcavity," Opt. Lett. 36, 103-105 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-2-103

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