We present a generic microcavity platform for cavity experiments on optically active nanostructures, such as quantum dots, nanocrystals, color centers, and carbon nanotubes. The cavity is of the Fabry-Pérot type with a planar back mirror and a miniature concave top mirror with radius of curvature ∼ 100 μm. Optical access is achieved by free beam coupling, allowing good mode-matching to the cavity mode. The cavity has a high Q-factor, reasonably small mode volume, open access, spatial and spectral tunability, and operates at cryogenic temperatures. Spectral and spatial tuning of the Purcell effect (weak coupling regime) on a single InGaAs quantum dot is demonstrated.

Topics
Electrical properties and parameters, Cryogenics, Crystallographic defects, Nanocrystals, Nanotubes, Quantum dots, Microoptics, Optical reflectors, Optical resonators, Purcell effect
© 2011 American Institute of Physics.
2011
American Institute of Physics
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