Electromagnetic cavity with arbitrary Q and small modal volume without a complete photonic bandgap
- 15 October 2002
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 27 (20), 1785-1787
- https://doi.org/10.1364/ol.27.001785
Abstract
We show how an electromagnetic cavity with arbitrarily high 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 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. values in excess of 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.
Keywords
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