Spectral tuning and near-field imaging of photonic crystal microcavities

Year: 2008

Authors: Intonti F., Vignolini S., Riboli F., Vinattieri A., Wiersma D.S., Colocci M., Balet L., Monat C., Zinoni C., Li LH., Houdre R., Francardi M., Gerardino A., Fiore A., Gurioli M.

Autors Affiliation: 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.

Journal/Review: PHYSICAL REVIEW B

Volume: 78 (4)      Pages from: 041401  to: 041401

KeyWords: single quantum-dot; nanocavity; resonance
DOI: 10.1103/PhysRevB.78.041401

Citations: 62
data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-11-17
References taken from IsiWeb of Knowledge: (subscribers only)
Connecting to view paper tab on IsiWeb: Click here
Connecting to view citations from IsiWeb: Click here