Anisotropic photonic crystal structures consisting of birefringent porous silicon layers with alternating porosity were fabricated. The in-plane birefringence formed as a result of anisotropic etching in Si(110) results in unique multilayered structures with two distinct photonic bandgaps for orthogonal light polarizations. Nonlinear optical studies based on the third-harmonic generation from these structures demonstrate variation in the symmetry of the nonlinear optical response.
© 2006 Optical Society of America
(240.6490) Optics at surfaces : Spectroscopy, surface
Original Manuscript: June 12, 2006
Revised Manuscript: August 1, 2006
Manuscript Accepted: August 5, 2006
Published: October 11, 2006
Georgi I. Petrov, Vladislav I. Shcheslavskiy, Vladislav V. Yakovlev, Leonid A. Golovan, Elena Yu. Krutkova, Andrei B. Fedotov, Alexei M. Zheltikov, Victor Yu. Timoshenko, Pavel K. Kashkarov, and Ekaterina M. Stepovich, "Effect of photonic crystal structure on the nonlinear optical anisotropy of birefringent porous silicon," Opt. Lett. 31, 3152-3154 (2006)