Coherence properties of infrared thermal emission from heated metallic nanowires

Levente J. Klein; Hendrik F. Hamann; Yat Yin Au; Snorri Ingvarsson

doi:10.1063/1.2936835

Coherence properties of infrared thermal emission from heated metallic nanowires

Levente J. Klein
, Hendrik F. Hamann
, Yat Yin Au
, Snorri Ingvarsson

Office of the Dean SOMAS

IBM
University of Iceland

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18 Scopus citations

Abstract

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 μm, which is much larger than expected from a classical blackbody radiator. Significant increases in coherence and emission efficiency are observed for smaller nanowires.

Original language	English
Article number	213102
Journal	Applied Physics Letters
Volume	92
Issue number	21
DOIs	https://doi.org/10.1063/1.2936835
State	Published - 2008

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10.1063/1.2936835

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title = "Coherence properties of infrared thermal emission from heated metallic nanowires",

abstract = "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 μm, which is much larger than expected from a classical blackbody radiator. Significant increases in coherence and emission efficiency are observed for smaller nanowires.",

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AU - Hamann, Hendrik F.

AU - Au, Yat Yin

AU - Ingvarsson, Snorri

PY - 2008

Y1 - 2008

N2 - 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 μm, which is much larger than expected from a classical blackbody radiator. Significant increases in coherence and emission efficiency are observed for smaller nanowires.

AB - 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 μm, which is much larger than expected from a classical blackbody radiator. Significant increases in coherence and emission efficiency are observed for smaller nanowires.

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U2 - 10.1063/1.2936835

DO - 10.1063/1.2936835

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SN - 0003-6951

VL - 92

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 21

M1 - 213102

ER -

Coherence properties of infrared thermal emission from heated metallic nanowires

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