title: Physics of near-wavelength high contrast gratings.
abstract: We present a simple theory explaining the extraordinary features of high-contrast optical gratings in the near-wavelength regime, particularly the very broadband high reflectivity (>99%) and the ultra-high quality factor resonances (Q>10(7)). We present, for the first time, an intuitive explanation for both features using a simple phase selection rule, and reveal the anti-crossing and crossing effects between the grating modes. Our analytical results agree well with simulations and the experimental data obtained from vertical cavity surface emitting lasers incorporating a high contrast grating as top reflector.
authors.affiliation: Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720, USA.
authors.forename: Vadim
authors.initials: V
authors.lastname: Karagodsky
authors.forename: Connie J
authors.initials: CJ
authors.lastname: Chang-Hasnain
mesh_terms: D002623:Chemistry Techniques, Analytical; D003198:Computer Simulation; D004867:Equipment Design; D007834:Lasers; D055095:Optics and Photonics; D010825:Physics / Q000379:methods*; D012031:Refractometry; D012542:Scattering, Radiation; D013499:Surface Properties