Koenderink, A Femius; Kafesaki, Maria; Buchler, Benjamin; Sandoghar, Vahid
We demonstrate theoretically that the resonance frequencies of high-Q microcavities in two-dimensional photonic crystal membranes can be tuned over a wide range by introducing a subwavelength dielectric tip into the cavity mode. Three-dimensional finite-difference time-domain simulations show that by varying the lateral and vertical positions of the tip, it is possible to tune the resonator frequency without lowering the quality factor. Excellent agreement with a perturbative theory is...[Show more]
Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.