Angle-resolved cathodoluminescence spectroscopy

被引：76

作者：

Coenen, Toon ^{[1
]}

Vesseur, Ernst Jan R. ^{[1
]}

Polman, Albert ^{[1
]}

机构：

[1] FOM Inst AMOLF, Ctr Nanophoton, NL-1098 XG Amsterdam, Netherlands

来源：

APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 14期

关键词：

cathodoluminescence; electron beam effects; gold; transition radiation; MICROSCOPY;

D O I：

10.1063/1.3644985

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a cathodoluminescence spectroscopy technique which combines deep subwavelength excitation resolution with angle-resolved detection capabilities. The cathodoluminescence emission is collected by a paraboloid mirror (effective NA=0.96) and is projected onto a 2D CCD array. The azimuthal and polar emission pattern is directly deduced from the image. As proof of principle, we use the technique to measure the angular distribution of transition radiation from a single crystalline gold surface under 30 keV electron irradiation. We find that the experiment matches very well with theory, illustrating the potential of this technique for the characterization of photonic structures with deep subwavelength dimensions. (C) 2011 American Institute of Physics. [doi:10.1063/1.3644985]

引用

页数：3

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