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

被引：7
|
作者：
La China, F. [1 ,2 ]
Intonti, F. [1 ,2 ]
Caselli, N. [1 ,2 ]
Lotti, F. [1 ,2 ]
Vinattieri, A. [1 ,2 ]
Trivino, N. Vico [3 ]
Carlin, J. -F. [3 ]
Butte, R. [3 ]
Grandjean, N. [3 ]
Gurioli, M. [1 ,2 ]
机构：
[1] European Lab Nonlinear Spect, I-50019 Sesto Fiorentino, FI, Italy
[2] Univ Florence, Dept Phys & Astron, I-50019 Sesto Fiorentino, FI, Italy
[3] Ecole Polytech Fed Lausanne, Inst Condensed Matter Phys, CH-1015 Lausanne, Switzerland
来源：
APPLIED PHYSICS LETTERS | 2015年 / 107卷 / 10期
基金：
瑞士国家科学基金会;
关键词：
SINGLE QUANTUM-DOT; NANOCAVITY; LIGHT;
D O I：
10.1063/1.4930892
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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. (C) 2015 AIP Publishing LLC.
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页数：4
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