TY - JOUR
T1 - Light sources inside photonic crystals
AU - Megens, Mischa
AU - Wijnhoven, Judith E.G.J.
AU - Lagendijk, Ad
AU - Vos, Willem L.
PY - 1999/1/1
Y1 - 1999/1/1
N2 - We have measured the optical fluorescence spectra of dye incorporated in high-quality photonic crystals made from colloids. The spectra reveal a stopgap that is due to Bragg reflection with strikingly reduced attenuation compared with plane-wave transmission. The modified attenuation is independent of the position of the sources in the sample and is brought about by diffuse scattering from defects near the surface. In the presence of a photonic bandgap, the diffuse component would disappear. Thus we have found a simple, unambiguous probe for the presence of photonic bandgaps.
AB - We have measured the optical fluorescence spectra of dye incorporated in high-quality photonic crystals made from colloids. The spectra reveal a stopgap that is due to Bragg reflection with strikingly reduced attenuation compared with plane-wave transmission. The modified attenuation is independent of the position of the sources in the sample and is brought about by diffuse scattering from defects near the surface. In the presence of a photonic bandgap, the diffuse component would disappear. Thus we have found a simple, unambiguous probe for the presence of photonic bandgaps.
UR - http://www.scopus.com/inward/record.url?scp=0033465283&partnerID=8YFLogxK
U2 - 10.1364/JOSAB.16.001403
DO - 10.1364/JOSAB.16.001403
M3 - Article
AN - SCOPUS:0033465283
SN - 0740-3224
VL - 16
SP - 1403
EP - 1408
JO - Journal of the Optical Society of America. B: Optical physics
JF - Journal of the Optical Society of America. B: Optical physics
IS - 9
ER -