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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. 26, Iss. 12 — Dec. 1, 2009
  • pp: 2449–2454

Analysis of mode characteristics for equilateral-polygonal resonators with a center hole

Shi-Jiang Wang, Yue-De Yang, and Yong-Zhen Huang  »View Author Affiliations


JOSA B, Vol. 26, Issue 12, pp. 2449-2454 (2009)
http://dx.doi.org/10.1364/JOSAB.26.002449


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Abstract

Mode characteristics for equilateral triangles, squares, and hexagonal resonators with a center hole are numerically simulated by the finite-different time domain (FDTD) technique. The center hole does not break the symmetry behavior of the original resonators and can result in modification of the mode field patterns and mode Q factors. In an equilateral triangle resonator the center hole can suppress the symmetry state of degenerate states with the merit of single mode operation. In a square resonator, the Q factor can be enhanced for some modes with a suitable size of the hole. For a hexagonal resonator with a side length of 1 μ m and a refractive index of 3.2, the mode Q factors first gradually decrease with the increase of the hole diameter for modes at a wavelength of about 1500 nm , then the modes transform to that of a microdisk with a jump of the mode wavelength as the hole diameter approaches 0.7 μ m . Finally, the mode Q factors greatly enhance as the hole diameter reaches about 1 μ m . The results indicate that the center hole can greatly modify mode characteristics, especially that of the mode Q factor.

© 2009 Optical Society of America

OCIS Codes
(140.4780) Lasers and laser optics : Optical resonators
(140.5960) Lasers and laser optics : Semiconductor lasers
(140.3945) Lasers and laser optics : Microcavities

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: July 24, 2009
Manuscript Accepted: November 1, 2009
Published: November 30, 2009

Citation
Shi-Jiang Wang, Yue-De Yang, and Yong-Zhen Huang, "Analysis of mode characteristics for equilateral-polygonal resonators with a center hole," J. Opt. Soc. Am. B 26, 2449-2454 (2009)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-26-12-2449


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