Open AccessLow-threshold laser oscillation due to group-velocity anomaly peculiar to two- and three-dimensional photonic crystals
Author(s) -
Kazuaki Sakoda,
K. Ohtaka,
Tsuyoshi Ueta
Publication year - 1999
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.4.000481
Subject(s) - lasing threshold , photonic crystal , optics , group velocity , physics , anomaly (physics) , reflection (computer programming) , oscillation (cell signaling) , photonics , laser , condensed matter physics , biology , computer science , genetics , programming language
An analytical expression of the lasing threshold for arbi trary photonic crystals was derived, which showed their reduction due to small group velocities of electromagnetic eigenmodes. The lasing threshold was also evaluated numerically for a two-dimensional photonic crystal by examining the divergence of its transmission and reflection coeffcients numerically. A large reduction of lasing threshold caused by a group-velocity anomaly that is peculiar to two- and three- dimensional photonic crystals was found.