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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 27, Iss. 2 — Feb. 1, 2010
  • pp: 300–304

High-Q unidirectional emission properties of the symmetric half-spiral microcavities

Xin Tu, Xiang Wu, Liying Liu, and Lei Xu  »View Author Affiliations


JOSA B, Vol. 27, Issue 2, pp. 300-304 (2010)
http://dx.doi.org/10.1364/JOSAB.27.000300


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Abstract

Mode field patterns and light emissions of novel symmetric half-spiral microcavities (SHSMs) are investigated by the two-dimensional (2-D) finite-difference time domain (FDTD) method. The calculation results show that an SHSM can support high-quality (Q) ( Q > 10 4 ) distorted whispering-gallery modes with directional emissions. Moreover, artificial controls on the Q factor and emission directionality are realized in the coupled size-mismatched SHSMs, and unidirectional emission from the coupled cavity structure with a divergence of 19° is achieved.

© 2010 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(140.3945) Lasers and laser optics : Microcavities

ToC Category:
Integrated Optics

History
Original Manuscript: August 10, 2009
Revised Manuscript: December 7, 2009
Manuscript Accepted: December 7, 2009
Published: January 22, 2010

Citation
Xin Tu, Xiang Wu, Liying Liu, and Lei Xu, "High-Q unidirectional emission properties of the symmetric half-spiral microcavities," J. Opt. Soc. Am. B 27, 300-304 (2010)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-27-2-300

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