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

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

2007-06-13

arxiv.org/abs/0706.1831v1

App. Phys. Lett., v90 (9), art. no. 091102, Aug. 27, 2007

Physics

Optics

4 pages, 3 figures

Scientific paper

10.1063/1.2775811

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.

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