We demonstrate a suspended circular grating for efficient, broadband photoluminescence spectroscopy of single InAs quantum dots. Collected photon rates 20 times greater than in bulk and significant radiative lifetime reduction are observed.
© 2011 OSA
(230.5590) Optical devices : Quantum-well, -wire and -dot devices
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence
(350.4238) Other areas of optics : Nanophotonics and photonic crystals
M. Davanço, M. T. Rakher, A. Badolato, and K. Srinivasan, "Nanophotonic circular dielectric grating for efficient free-space extraction of single quantum dot emission," in CLEO:2011 - Laser Applications to Photonic Applications, OSA Technical Digest (CD) (Optical Society of America, 2011), paper QWC5.
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