A simple, rigorous electromagnetic formula is derived for predicting the electromagnetic power provided by sources located in transparent or dissipative planar microcavities. With this simple approach, we compare numerically and experimentally the electromagnetic power that escapes the microcavity when the source is located in a metallodielectric or in an all-dielectric resonant planar structure. Although a strong light-extraction coefficient might be expected for metallodielectric microcavities, we show that these attractive structures suffer from metal absorption even when thin metallic layers are used. Experiments implemented with europium chelates located in metallodielectric or in all-dielectric microcavities confirm this result.
© 1999 Optical Society of America
H. Rigneault, C. Amra, C. Begon, M. Cathelinaud, and C. Picard, "Light Emission from Sources Located within Metallodielectric Planar Microcavities," Appl. Opt. 38, 3602-3609 (1999)