Switching mirror in the CdTe-based photonic crystal

Abstract

Theoretical investigations, modeling and design of a Bragg mirror (photonic crystal structure) in the CdTe-based material system are presented. It is shown that, in addition to the third-order nonlinearity (Kerr-like effect), the two-photon absorption and the resulting free-carrier refraction have to be included in the analysis and design. Inclusion of changes in the refractive index with the square of the light intensity (fifth-order nonlinearity) leads to desirable functional features of the switching mirror. The analysis provides insight into the complex nonlinear effects and serves as a tool for designing a nonlinear intra-cavity mirror for a novel pulsed laser