Single quantum dot spectroscopy using a fiber taper waveguide near-field optic

Abstract

Photoluminescence spectroscopy of single InAs quantum dots at cryogenic temperatures (~14 K) is performed using a micron-scale optical fiber taper waveguide as a near-field optic. The measured collection efficiency of quantum dot spontaneous emission into the fundamental guided mode of the fiber taper is estimated at 0.1%, and spatially-resolved measurements with ~600 nm resolution are obtained by varying the taper position with respect to the sample and using the fiber taper for both the pump and collection channels.

4 pages, 3 figures

References in corpus (7)

• Self-tuned quantum dot gain in photonic crystal lasers
• Multi-Exciton Spectroscopy of a Single Self Assembled Quantum Dot
• Sub-microsecond correlations in photoluminescence from InAs quantum dots
• Optical-fiber based measurement of an ultra-small volume high-Q photonic crystal microcavity
• Optical fiber taper coupling and high-resolution wavelength tuning of microdisk resonators at cryogenic temperatures
• Optical loss and lasing characteristics of high-quality-factor AlGaAs microdisk resonators with embedded quantum dots
• Charged exciton emission at 1.3 $\mu$m from single InAs quantum dots grown by metalorganic chemical vapor deposition

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