Abstract
We report on the realization of high-quality organic microcavities consisting of distributed Bragg reflectors (DBRs) based on lithium fluoride (LiF) and tellurium dioxide (TeO x ) deposited by thermal evaporation. The materials are transparent in the range from 350 nm to 5 μm and have an evaporation temperature of about 1000 K . The large difference in the refractive index (about 0.9 in the visible and near infrared range) allows one to obtain a reflectivity higher than 99% over a spectral region about 200 nm wide with a small number of periods. The mirror deposition technique is suitable for the fabrication of organic quantum microcavities in a single deposition process. Three fully evaporated organic λ cavities with Phyrrometene 580 as active material are described. The cavities show Q-value up to 300, good uniformity and reproducibility.
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