Subwavelength imaging of light confinement in high-Q/small-V photonic crystal nanocavity

被引：21

作者：

Lalouat, Loic ^{[1
]}

Cluzel, Benoit ^{[1
]}

de Fornel, Frederique ^{[1
]}

Velha, Philippe ^{[2
]}

Lalanne, Philippe ^{[2
]}

Peyrade, David ^{[3
]}

Picard, Emmanuel ^{[4
]}

Charvolin, Thomas ^{[4
]}

Hadji, Emmanuel ^{[4
]}

机构：

[1] Inst Carnot Bourgogne, UMR CNRS 5209, Grp Opt Champ Proche, F-21078 Dijon, France

[2] Univ Paris Sud, CNRS, Inst Opt, Lab Charles Fabry, F-91127 Palaiseau, France

[3] CNRS, Lab Technol Microelect, F-38054 Grenoble, France

[4] CEA, DRFMC SP2M, Lab Silicium Nanoelect Photon & Struct, F-38054 Grenoble, France

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 11期

关键词：

D O I：

10.1063/1.2890051

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The optical near field of a high-Q and ultrasmall volume photonic crystal nanocavity is visualized with a subwavelength resolution by using a scanning near-field optical microscope (SNOM) operating at the same time in collection-scanning mode and in interaction-scanning mode. It is shown that the nanocavity resonant mode is selectively visualized by using the SNOM interaction-scanning mode while the whole electromagnetic field surrounding the nanocavity is probed using the SNOM collection-scanning mode. The different optical near-field images are compared in light of a three-dimensional numerical analysis and we demonstrate an unexpected mode coupling at the cavity resonance. (C) 2008 American Institute of Physics.

引用

页数：3