Title :
Subwavelength Grating-Mirror VCSEL With a Thin Oxide Gap
Author :
Chung, II-Sung ; Mørk, Jesper ; Gilet, Philippe ; Chelnokov, Alexei
Author_Institution :
Tech. Univ. of Denmark, Lyngby
Abstract :
A new vertical-cavity surface-emitting laser (VCSEL) structure based on a subwavelength grating mirror and a thin oxide gap is suggested and numerically investigated. The structure is shown to exhibit similar threshold gain, suppression of higher order transverse modes, and polarization stability as a grating-mirror VCSEL reported in the literature based on a thick air gap. The thin oxide gap structure has a number of advantages including easier fabrication, better mechanical stability, and very strong single-mode properties.
Keywords :
diffraction gratings; laser beams; laser cavity resonators; laser mirrors; laser modes; laser stability; surface emitting lasers; VCSEL; single-mode properties; subwavelength grating mirror; thick air gap; thin oxide gap; vertical cavity surface emitting laser; Apertures; Distributed Bragg reflectors; Gratings; Laser modes; Oxidation; Polarization; Power generation; Stability; Surface emitting lasers; Vertical cavity surface emitting lasers; Grating; high power; single mode;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.912689
