Er 3+ in strong light-confining microcavity
- 21 August 2000
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 77 (8) , 1150-1152
- https://doi.org/10.1063/1.1289800
Abstract
Er 3+ ions produce a sharp line emission that has small absorption cross section, long radiative lifetime, and is independent of external perturbations. These optical properties of the Er3+ ions limit the pumping efficiency and tunability of the emission line. In this work we present a study in which Er3+ emission was modified by coupling an ensemble of Er3+ ions to a microcavity resonance. The optical response of an optical cavity that consists of an Er2O3 layer confined between Si/SiO2 distributed Bragg reflectors is studied. When the cavity is in resonance with the optical transition of the Er3+ ions, the resonances in the reflectivity spectra split. The results are explained by a standard semiclassical model of atom–photon coupling.Keywords
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