Monolithic high-index contrast grating: a material independent high-reflectance VCSEL mirror.

Optics express

PubMedID: 25969259

Gebski M, Dems M, Szerling A, Motyka M, Marona L, Kruszka R, Urbanczyk D, Walczakowski M, Palka N, Wójcik-Jedlinska A, Wang QJ, Zhang DH, Bugajski M, Wasiak M, Czyszanowski T. Monolithic high-index contrast grating: a material independent high-reflectance VCSEL mirror. Opt Express. 2015;23(9):11674-86.
In this paper we present an extensive theoretical and numerical analysis of monolithic high-index contrast grating, facilitating simple manufacture of compact mirrors for very broad spectrum of vertical-cavity surface-emitting lasers (VCSELs) emitting from ultraviolet to mid-infrared. We provide the theoretical background explaining the phenomenon of high reflectance in monolithic subwavelength gratings. In addition, by using a three-dimensional, fully vectorial optical model, verified by comparison with the experiment, we investigate the optimal parameters of high-index contrast grating enabling more than 99. 99% reflectance in the diversity of photonic materials and in the broad range of wavelengths.