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Optics Letters

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  • Vol. 27, Iss. 20 — Oct. 15, 2002
  • pp: 1785–1787

Electromagnetic cavity with arbitrary Q and small modal volume without a complete photonic bandgap

M. R. Watts, S. G. Johnson, H. A. Haus, and J. D. Joannopoulos  »View Author Affiliations


Optics Letters, Vol. 27, Issue 20, pp. 1785-1787 (2002)
http://dx.doi.org/10.1364/OL.27.001785


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Abstract

We show how an electromagnetic cavity with arbitrarily high Q and small (bounded) modal volume can be formed in two or three dimensions with a proper choice of dielectric constants. Unlike in previous work, neither a complete photonic bandgap nor a trade-off in mode localization for Q is required. Rather, scattering and radiation are prohibited by a perfect mode match of the TE-polarized modes in each subsection of a Bragg resonator. Q values in excess of 105 are demonstrated through finite-difference time-domain simulations of two- and three-dimensional structures with modal areas or volumes of the order of the wavelength squared or cubed.

© 2002 Optical Society of America

OCIS Codes
(050.2230) Diffraction and gratings : Fabry-Perot
(230.5750) Optical devices : Resonators

Citation
M. R. Watts, S. G. Johnson, H. A. Haus, and J. D. Joannopoulos, "Electromagnetic cavity with arbitrary Q and small modal volume without a complete photonic bandgap," Opt. Lett. 27, 1785-1787 (2002)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-27-20-1785

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