Progress in growth, fabrication, and characterization of semiconductor photonic crystal nanocavities

Abstract

Phone: þ01 520 621 9606, Fax: þ01 520 621 4358We present the results of recent investigations into the fabrication and characterization of high-Q, small mode volume one-dimensional photonic crystal nanobeam cavities in Si and two-dimensional photonic crystal slab nanocavities in GaAs. The nanobeam cavity modes are investigated in transmission by means of a microfiber taper loop apparatus. The spectral transmission profile of the cavity modes is investigated as a function of input polarization into the fiber. The Q of the cavity for different positions and orientations of the fiber taper is investigated. The results are compared to measurements by resonant scattering. The slab nanocavities are investigated by means of quantum dot photoluminescence excitation spectroscopy. We present recent progress in growth and fabrication of such slab nanocavities.

The Design of Optical Switch for One-Dimension Photonic Crystal Constructed with TiO₂ and Liquid Crystal

“…The tunable photonic crystals have drawn much attention in recent years. Many researchers have presented a variety of tunable photonic crystals such as LC photonic crystal, semiconductor photonic crystal and superconducting photonic crystal etc [4][5][6]. Using these tunable photonic crystals can be designed to many new devices, for instance, tunable filter, photonic crystal sensor, photonic crystal resonator, photonic crystal optical switch and so on [7][8][9][10][11].…”