Spectral tuning and near-field imaging of photonic crystal microcavities
Anno: 2008
Autori: Intonti F., Vignolini S., Riboli F., Vinattieri A., Wiersma D., Colocci M., Balet L., Monat C., Zinoni C., Li LH., Houdre R., Francardi M., Gerardino A., Fiore A., Gurioli M.
Affiliazione autori: Univ Florence, LENS, I-50019 Sesto Fiorentino, Italy;
Univ Florence, Dept Phys, I-50019 Sesto Fiorentino, Italy;
CNISM, Unita Ric Firenze, 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
Abstract: We experimentally observe a sizable and reversible spectral tuning of the resonances of a two-dimensional photonic crystal microcavity induced by the introduction of a subwavelength size glass tip. The comparison between experimental near-field data, collected with lambda/6 spatial resolution, and results of numerical calculations shows that the spectral shift induced by the tip is proportional to the local electric field intensity of the cavity mode. This observation proves that the electromagnetic local density of states in a microcavity can be directly measured by mapping the tip-induced spectral shift with a scanning near-field optical microscope.
Giornale/Rivista: PHYSICAL REVIEW B
Volume: 78 (4) Da Pagina: 041401 A: 041401
Parole chiavi: single quantum-dot; nanocavity; resonanceDOI: 10.1103/PhysRevB.78.041401Citazioni: 61dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-05Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui