TY - JOUR
T1 - Modified spontaneous emission spectra of laser dye in inverse opal photonic crystals
AU - Schriemer, Henry P.
AU - Van Driel, Henry M.
AU - Koenderink, A. Femius
AU - Vos, Willem L.
PY - 2001/1/1
Y1 - 2001/1/1
N2 - We have observed strongly modified spontaneous-emission spectra from laser dye in photonic crystals made of inverse opals in titania (TiO2). We identify stop bands with large relative widths of 15%, comparable to the dyes' emission spectrum, and 75% attenuation of the emission strength. For a wide range of angles, two stop bands are simultaneously manifested; their angle-dependent frequencies display an avoided crossing that is corroborated by reflectivity experiments. The edges of the stop bands agree well with band-structure calculations, but differ from simple Bragg diffraction as a result of multiple wave coupling. The strongly reduced dispersion of the Bloch modes likely causes a significant change in the density of states.
AB - We have observed strongly modified spontaneous-emission spectra from laser dye in photonic crystals made of inverse opals in titania (TiO2). We identify stop bands with large relative widths of 15%, comparable to the dyes' emission spectrum, and 75% attenuation of the emission strength. For a wide range of angles, two stop bands are simultaneously manifested; their angle-dependent frequencies display an avoided crossing that is corroborated by reflectivity experiments. The edges of the stop bands agree well with band-structure calculations, but differ from simple Bragg diffraction as a result of multiple wave coupling. The strongly reduced dispersion of the Bloch modes likely causes a significant change in the density of states.
UR - http://www.scopus.com/inward/record.url?scp=18344362668&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.63.011801
DO - 10.1103/PhysRevA.63.011801
M3 - Article
AN - SCOPUS:18344362668
SN - 1050-2947
VL - 63
SP - 1
EP - 4
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 1
M1 - 011801
ER -