Local nanofluidic light sources in silicon photonic crystal microcavities

Year: 2008

Authors: Vignolini S., Riboli F., Intonti F., Belotti, M., Gurioli M., Chen Y., Colocci M., Andreani L.C., Wiersma D.S.

Autors Affiliation: European Lab Nonlinear Spectroscopy LENS, I-50019 Sesto Fiorentino, Italy; INFM BEC, I-50019 Sesto Fiorentino, Italy; CNISM, Unita Ric Firenze, I-50019 Sesto Fiorentino, Italy; Univ Pavia, Dipartimento Fis A Volta, I-27100 Pavia, Italy; Univ Pavia, UdR CNISM, I-27100 Pavia, Italy; LPN CNRS, Lab Photon & Nanostruct, F-91460 Marcoussis, France; Ecole Normale Super, Dept Chim, F-75231 Paris 05, France

Abstract: We report on the realization of a rewritable and local source inside a Si-based photonic crystal microcavity by infiltrating a solution of colloidal PbS quantum dots inside a single pore of the structure. We show that the resulting spontaneous emission from the source is both spatially and spectrally redistributed due to the mode structure of the photonic crystal cavity. The coupling of the quantum dot emission to the cavity mode is analyzed by mapping the luminescence signal of the infiltrated solution with a scanning near-field optical microscope at room temperature. Spectral characterization and the mode profile are in good agreement with a three-dimensional numerical calculation of the system.

Journal/Review: PHYSICAL REVIEW E

Volume: 78 (4)      Pages from: 045603  to: 045603

More Information: We wish to thank Alfredo de Rossi and the entire micro-and nanophotonics group at LENS for fruitful discussions. This work was financially supported by the European Network of Excellence on nanophotonics Phoremost (Grant No. IST-2-511616-NoE) and by the CARIPLO Foundation.
DOI: 10.1103/PhysRevE.78.045603

Citations: 26
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