paper

Analytical Perspective for Photonic Bound States in the Continuum in Photonic Crystal Slabs

arXiv:1312.2478 · doi:10.1103/PhysRevLett.113.037401

Abstract

We investigate the formation of photonic bound states in the continuum (BICs) in photonic crystal slabs from an analytical perspective. Unlike the stationary at- BICs which origin from the geometric symmetry, the tunable off- BICs are due to the weighted destructive via-the-continuum interference in the vicinity of accidental symmetry when the majority of the radiation is pre-canceled. The symmetric compatible nature of the off- BICs leads to a trapping of light that can be tuned through continuously varying the wavevector. With the analytical approach, we explain a reported experiment and predict the existence of a new BIC at an unrevealed symmetry.

5 pages, 5 figures

References in corpus (1)

Cited by in corpus (85)