Vectorial near-field imaging of a GaN based photonic crystal cavity

Journal Article · Mon Sep 07 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4930892· OSTI ID:22482025

Intonti, F.; Caselli, N.; Lotti, F.; Vinattieri, A.; Gurioli, M. ^[1]; Vico Triviño, N.; Carlin, J. -F.; Butté, R.; Grandjean, N. ^[2]

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1. European Laboratory for Non-linear Spectroscopy, 50019 Sesto Fiorentino (Italy)
2. Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne (Switzerland)

We report a full optical deep sub-wavelength imaging of the vectorial components of the electric local density of states for the confined modes of a modified GaN L3 photonic crystal nanocavity. The mode mapping is obtained with a scanning near-field optical microscope operating in a resonant forward scattering configuration, allowing the vectorial characterization of optical passive samples. The optical modes of the investigated cavity emerge as Fano resonances and can be probed without the need of embedded light emitters or evanescent light coupling into the nanocavity. The experimental maps, independently measured in the two in-plane polarizations, turn out to be in excellent agreement with numerical predictions.

• OSTI ID: 22482025
• Journal Information: Applied Physics Letters, Vol. 107, Issue 10; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CONFIGURATION
COUPLING
CRYSTALS
DENSITY OF STATES
GALLIUM NITRIDES
MAPPING
OPTICAL MICROSCOPES
OPTICAL MODES
POLARIZATION
RESONANCE
SCATTERING
VISIBLE RADIATION
WAVELENGTHS