Near-field imaging of coupled photonic-crystal microcavities

Year: 2009

Authors: Vignolini S., Intonti F., Zani M., Riboli F., Wiersma D.S., Li L.H., Balet L., Francardi M., Gerardino A., Fiore A., Gurioli M.

Autors Affiliation: Univ Florence, LENS, I-50019 Sesto Fiorentino, Italy;
INFM BEC, I-50019 Sesto Fiorentino, Italy;
CNISM, Dept Phys, I-50019 Sesto Fiorentino, Italy;
Ecole Polytech Fed Lausanne, Inst Photon & Quantum Elect, CH-1015 Lausanne, Switzerland;
CNR, Inst Photon & Nanotechnol, I-00156 Rome, Italy;
Eindhoven Univ Technol, COBRA Res Inst, NL-5600 MB Eindhoven, Netherlands

Abstract: We report by means of near-field microscopy on the coupling between two adjacent photonic crystal microcavities. Clear-cut experimental evidence of the spatial delocalization of coupled-cavity optical modes is obtained by imaging the electromagnetic local density of states. We also demonstrate that it is possible to design photonic structures with selective coupling between different modes having orthogonal spatial extensions.

Journal/Review: APPLIED PHYSICS LETTERS

Volume: 94 (15)      Pages from: 151103  to: 151103

More Information: The authors thank Marco Prevedelli for helping in the automation of mask design. Financial support is acknowledged from the Swiss National Science Foundation.
KeyWords: cavity resonators; laser beams; laser cavity resonators; laser modes; microcavities
DOI: 10.1063/1.3107269

Citations: 35
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