Title :
Two-Dimensional Photonic Crystals Coupled to One-Dimensional Bragg Mirrors
Author :
Li, Xiang ; Boucaud, Philippe ; Checoury, Xavier ; El Kurdi, Moustafa ; David, Sylvain ; Sauvage, Sébastien ; Yam, Navy ; Fossard, Frédéric ; Bouchier, Daniel ; Fedeli, J.-M. ; Calvo, Vincent ; Hadji, Emmanuel
Author_Institution :
Inst. d´´Electron. Fondamentale, Univ. de Paris-Sud, Orsay
Abstract :
Planar two-dimensional (2-D) photonic crystals can be combined with a one-dimensional (1-D) Bragg mirror to control the quality factor and out-of-plane coupling of optical modes. We have investigated the optical properties of such structures fabricated on silicon. The optical properties are probed by the room-temperature photoluminescence of Ge/Si self-assembled islands as an internal source. We show that the enhancement of the quality factor can be obtained by controlling the thickness of the silicon upper layer in which the 2-D photonic crystal is etched and the air filling factor of the photonic crystal. Quality factors of 2200 around 1100nm are obtained by this method for bulk photonic crystals with a square lattice pattern. The experimental results are supported by three-dimensional (3-D) finite-difference time-domain calculations of the investigated structures
Keywords :
Ge-Si alloys; Q-factor; elemental semiconductors; etching; finite difference time-domain analysis; island structure; mirrors; photoluminescence; photonic crystals; self-assembly; silicon; 293 to 298 K; Ge-Si; Ge-Si self-assembled islands; Si; air filling factor; bulk photonic crystals; etching; one-dimensional Bragg mirrors; optical modes; out-of-plane coupling; planar photonic crystals; quality factor; room-temperature photoluminescence; square lattice pattern; three-dimensional finite-difference time-domain calculations; two-dimensional photonic crystals; Etching; Mirrors; Optical control; Optical coupling; Photoluminescence; Photonic crystals; Q factor; Silicon; Thickness control; Two dimensional displays; Ge/Si self-assembled islands; Si-based photonic crystal structures;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2006.885097
