Thermal imaging through hot emissive windows

Ciril Samuel Prasad; Henry O. Everitt; Gururaj V. Naik

doi:10.1038/s44172-024-00316-y

Thermal imaging through hot emissive windows

Ciril Samuel Prasad
, Henry O. Everitt
, Gururaj V. Naik

Nanofabrication Research Laboratory

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

It is not currently possible for an infrared camera to see through a hot window. The window’s own blinding thermal emission prevents objects on the other side from being imaged. Here, we demonstrate a path to overcoming this challenge by coating a hot window with an asymmetrically emitting infrared metasurface whose specially engineered imaginary index of refraction produces an asymmetric spatial distribution of absorption losses in its constituent nanoscale resonators.

Original language	English
Article number	172
Journal	Communications Engineering
Volume	3
Issue number	1
DOIs	https://doi.org/10.1038/s44172-024-00316-y
State	Published - Dec 2024

Funding

We thank Dr. Ashok Veeraraghavan and Dr. Vishwanath Saragadam for experimental assistance, and Dr. Stephen K. Sanders for theoretical discussions. This work was sponsored by the U.S. Army Research Office under cooperative agreement number W911NF2120031.

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10.1038/s44172-024-00316-y

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title = "Thermal imaging through hot emissive windows",

abstract = "It is not currently possible for an infrared camera to see through a hot window. The window{\textquoteright}s own blinding thermal emission prevents objects on the other side from being imaged. Here, we demonstrate a path to overcoming this challenge by coating a hot window with an asymmetrically emitting infrared metasurface whose specially engineered imaginary index of refraction produces an asymmetric spatial distribution of absorption losses in its constituent nanoscale resonators.",

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AB - It is not currently possible for an infrared camera to see through a hot window. The window’s own blinding thermal emission prevents objects on the other side from being imaged. Here, we demonstrate a path to overcoming this challenge by coating a hot window with an asymmetrically emitting infrared metasurface whose specially engineered imaginary index of refraction produces an asymmetric spatial distribution of absorption losses in its constituent nanoscale resonators.

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Thermal imaging through hot emissive windows

Abstract

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