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

  • Muller A
  • Flagg E
  • Metcalfe M
 et al. 
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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 (DBR). This open cavity can be rapidly tuned with a piezoelectric actuator without negatively affecting the QD linewidth. A mirror radius of curvature of 42 microns and a cavity length of 10 microns 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.

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  • Andreas Muller

  • Edward B. Flagg

  • Michael Metcalfe

  • John Lawall

  • Glenn S. Solomon

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