Coupling an epitaxial quantum dot to a fiber-based external-mirror microcavity

We report the coupling of individual InAs quantum dots (QDs) to an external-mirror microcavity. The external mirror is bonded to a fiber and positioned above a semiconductor sample consisting of a QD-containing GaAs layer on top of a distributed Bragg reflector. This open cavity can be rapidly tuned...

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Bibliographic Details
Published in:Applied physics letters 2009-10, Vol.95 (17), p.173101-173101-3
Main Authors: Muller, Andreas, Flagg, Edward B., Metcalfe, Michael, Lawall, John, Solomon, Glenn S.
Format: Article
Language:English
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Summary:We report the coupling of individual InAs quantum dots (QDs) to an external-mirror microcavity. The external mirror is bonded to a fiber and positioned above a semiconductor sample consisting of a QD-containing GaAs layer on top of a distributed Bragg reflector. This open cavity can be rapidly tuned with a piezo-electric actuator without negatively affecting the QD linewidth. A mirror radius of curvature of 42 μ m and a cavity length of 10 μ m enable good mode matching and thus high collection efficiency directly into the fiber. With an improved finesse, this system may enter the strong coupling regime.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3245311