Title :
Design of Low-Threshold Photonic Crystal Surface-Emitting Lasers
Author :
Hung, Chih-Tsang ; Syu, Yu-Cheng ; Wu, Tzeng-Tsong ; Lu, Tien-Chang
Author_Institution :
Dept. of Photonics, Nat. Chiao Tung Univ., Hsinchu, Taiwan
fDate :
5/15/2012 12:00:00 AM
Abstract :
We have investigated the influence of various thicknesses on different layers in GaAs-based photonic crystal surface-emitting lasers (PCSELs), by using the transfer matrix and coupled wave methods to increase the vertically optical confinement factor and to reduce the threshold gain. In addition, the relationship between the threshold gain and the filling factor has been considered. This letter provides an efficient calculation method for designing square-lattice-type PCSEL structures, which shall be useful for the fabrication of low-threshold PCSELs in the near future.
Keywords :
III-V semiconductors; gallium arsenide; optical fabrication; photonic crystals; semiconductor lasers; surface emitting lasers; GaAs; coupled wave methods; low-threshold photonic crystal surface-emitting lasers; threshold gain; transfer matrix; various thicknesses; vertically optical confinement factor; Optical coupling; Optical device fabrication; Optical refraction; Optical saturation; Optical variables control; Photonic crystals; Surface emitting lasers; Coupled wave; photonic crystal; surface-emitting laser;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2189760
