Coherence properties of infrared thermal emission from heated metallic nanowires

被引：15

作者：

Klein, Levente J. ^{[1
]}

Hamann, Hendrik F. ^{[1
]}

Au, Yat-Yin ^{[2
]}

Ingvarsson, Snorri ^{[2
]}

机构：

[1] IBM Corp, Thomas J Watson Res Ctr, Yorktown Hts, NY 10598 USA

[2] Univ Iceland, Inst Sci, IS-107 Reykjavik, Iceland

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 21期

关键词：

D O I：

10.1063/1.2936835

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Coherence properties of the infrared thermal radiation from individual heated nanowires are investigated as a function of nanowire dimensions. Interfering the thermally induced radiation from a heated nanowire with its image in a nearby moveable mirror, well-defined fringes are observed. From the fringe visibility, the coherence length of the thermal emission radiation from the narrowest nanowires was estimated to be at least 20 mu m, which is much larger than expected from a classical blackbody radiator. Significant increases in coherence and emission efficiency are observed for smaller nanowires. (c) 2008 American Institute of Physics.

引用

页数：3

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