Davanco, M. and Rakher, M. T. and Schuh, D. and Badolato, A. and Srinivasan, K. (2011) A circular dielectric grating for vertical extraction of single quantum dot emission. APPLIED PHYSICS LETTERS, 99 (4): 041102. ISSN 0003-6951,
Full text not available from this repository. (Request a copy)Abstract
We demonstrate a nanostructure composed of partially etched annular trenches in a suspended GaAs membrane, designed for efficient and moderately broadband (approximate to 5 nm) emission extraction from single InAs quantum dots. Simulations indicate that a dipole embedded in the nanostructure center radiates upward into free space with a nearly Gaussian far field, allowing a collection efficiency >80% with a high numerical aperture (NA = 0.7) optic and with approximate to 12x Purcell radiative rate enhancement. Fabricated devices exhibit a approximate to 10% photon collection efficiency with a NA = 0.42 objective, a 20x improvement over quantum dots in unpatterned GaAs. A fourfold exciton lifetime reduction indicates moderate Purcell enhancement. (C) 2011 American Institute of Physics. [doi:10.1063/1.3615051]
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PHOTON SOURCE; MICROCAVITIES; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics Physics > Institute of Experimental and Applied Physics > Chair Professor Huber > Group Rupert Huber |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 05 Jun 2020 05:57 |
| Last Modified: | 05 Jun 2020 05:57 |
| URI: | https://pred.uni-regensburg.de/id/eprint/20529 |
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