Open AccessDesign and analysis of two-dimensional high-index-contrast grating surface-emitting lasers
Author(s) -
Rakesh G. Mote,
Siu Fung Yu,
Wei Zhou,
Xiao Feng Li
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.000260
Subject(s) - grating , optics , laser , high contrast , materials science , semiconductor laser theory , refractive index , diffraction grating , guided mode resonance , excited state , optoelectronics , surface (topology) , excitation , contrast (vision) , physics , mathematics , geometry , quantum mechanics , nuclear physics
The use of a two-dimensional (2D) high-index-contrast grating (HCG) with square periodic lattice is proposed to realize surface-emitting lasers. This is possible because the use of 2D HCG, in which multiple resonant leaky modes are excited by the 2 orthogonal directions of the grating, causes the high reflective zone to be split into two regions. Hence, a dip of the reflectivity is formed to support the excitation of a resonant cavity-mode inside the 2D HCG. With suitable design on the dimensions of the 2D HCGs, Q factor as high as 1032 can be achieved.