Observation of spontaneous emission lifetime change of dye‐containing Langmuir–Blodgett films in optical microcavities

We have studied the spontaneous emission properties of Langmuir–Blodgett films containing dye molecules confined in Fabry–Perot microcavity structures having wavelength thickness. The presence of the cavity causes great modifications in the emission spectrum and emission intensity in the direction of the cavity axis. A clear change in spontaneous emission lifetime occurs, which is also attributed to the microcavity effect.