Open AccessNumerical analysis of resonant and lasing properties at a defect region within a random structure
Author(s) -
Hideki Fujiwara,
Yosuke Hamabata,
Keiji Sasaki
Publication year - 2009
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.17.003970
Subject(s) - lasing threshold , optics , finite difference time domain method , numerical analysis , structure factor , computer simulation , simple (philosophy) , physics , q factor , materials science , laser , mathematical analysis , mathematics , condensed matter physics , resonator , mechanics , philosophy , epistemology
We propose a simple structure for manipulating resonant conditions in random structures, in which a "defect" region where no scatterer is set is deliberately made in the structure. By employing a two-dimensional finite-difference time-domain method including rate equations, we examine the resonant and lasing properties observed at the defect region by changing the filling factor of scatterers. From the numerical results, we confirm that an distinct localized spot at the defect can be realized by determining an optimal filling factor and scatterer size and selecting the appropriate defect size.