Open AccessPhotonic crystal laser with mode selective mirrors
Author(s) -
Stephen A. Moore,
Liam O’Faoláin,
Thomas P. White,
Thomas F. Krauss
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.16.001365
Subject(s) - optics , lasing threshold , laser , photonic crystal , materials science , stopband , optoelectronics , finite difference time domain method , semiconductor laser theory , resonator , physics
The mini-stopband (MSB) of a W3 line-defect photonic crystal waveguide is used as a mirror for a GaAs based quantum-dot laser. Single mode, continuous-wave lasing is demonstrated for broad area lasers up to a current of 125 mA (2.7 x laser threshold), which demonstrates the high degree of mode selectivity of the MSB mirror. FDTD calculations indicate that optimisation of the mirror interface could lead to a further fourfold increase in reflectivity resulting in significantly reduced thresholds.