Open AccessDoubly enhanced spontaneous emission due to increased photon density of states at photonic band edge frequencies
Author(s) -
K. Kuroda,
Tsutomu Sawada,
Takashi Kuroda,
Kenji Watanabe,
Kazuaki Sakoda
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.17.013168
Subject(s) - spontaneous emission , photoluminescence , optics , amplified spontaneous emission , photonics , light emission , dielectric , materials science , purcell effect , excitation , photon , atomic physics , photonic crystal , photon counting , optoelectronics , physics , modulation (music) , laser , quantum mechanics , acoustics
Double enhancement of spontaneous emission due to increased photon density of states at the emission frequency and the small group velocity of light at the excitation frequency was clearly demonstrated by angle-resolved photoluminescence experiments for dielectric multilayers composed of Ta2O5 and SiO2 with oxygen vacancies as light emitters. Theoretical emission profiles given by the weak modulation approximation agreed well with the experimental observations.