Open AccessOptimal radii of photonic crystal holes within DBR mirrors in long wavelength VCSEL
Author(s) -
Tomasz Czyszanowski,
Maciej Dems,
Hugo Thienpont,
Krassimir Panajotov
Publication year - 2007
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.15.001301
Subject(s) - photonic crystal , vertical cavity surface emitting laser , optics , materials science , optoelectronics , laser , semiconductor laser theory , wavelength , photonic integrated circuit , diode , gallium arsenide , distributed bragg reflector , photonics , lattice constant , physics , diffraction
The modal characteristics of a Photonic-Crystal Vertical-Cavity Surface-Emitting diode Laser (PC-VCSEL) have been investigated. Photonic crystal structure, realized by a regular net of air holes within the layers, has been etched in the upper DBR mirror. An advanced three-dimensional, vectorial electromagnetic model has been applied to a phosphide - based device design featuring InGaAlAs active region, AlGaAs/GaAs mirrors and a tunnel junction to confine the current flow. For the structure under consideration a single mode operation has been found for the hole diameter over photonic crystal lattice constant ratio between 0.1 - 0.3.