Spectral tuning and near-field imaging of photonic crystal microcavities

被引：62

作者：

Intonti, Francesca ^{[1
,2
,3
]}

Vignolini, Silvia ^{[1
,2
]}

Riboli, Francesco ^{[1
,2
]}

Vinattieri, Anna ^{[1
,2
]}

Wiersma, Diederik S. ^{[1
,2
]}

Colocci, Marcello ^{[1
,2
]}

Balet, Laurent ^{[4
]}

Monat, Christelle ^{[4
]}

Zinoni, Carl ^{[4
]}

Li, Lianhe H. ^{[4
]}

Houdre, Romuald ^{[4
]}

Francardi, Marco ^{[5
]}

Gerardino, Annamaria ^{[5
]}

Fiore, Andrea ^{[4
]}

Gurioli, Massimo ^{[1
,2
]}

机构：

[1] Univ Florence, LENS, I-50019 Sesto Fiorentino, Italy

[2] Univ Florence, Dept Phys, I-50019 Sesto Fiorentino, Italy

[3] CNISM, Unita Ric Firenze, I-50019 Sesto Fiorentino, Italy

[4] Ecole Polytech Fed Lausanne, Inst Photon & Quantum Elect, CH-1015 Lausanne, Switzerland

[5] CNR, Inst Photon & Nanotechnol, I-00156 Rome, Italy

来源：

PHYSICAL REVIEW B | 2008年 / 78卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.78.041401

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：4

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