Journal
ACS PHOTONICS
Volume 7, Issue 4, Pages 853-860Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.9b01588
Keywords
thermal emission; temperature sensing; thermography; FTIR; infrared; spectroscopy
Categories
Funding
- Office of Naval Research [N00014-16-1-2556]
- Department of Energy NEUP [DE-NE0008680]
Ask authors/readers for more resources
We introduce a technique based on infrared thermal emission, termed depth thermography, that can remotely measure the temperature distribution beneath the surface of certain objects. Depth thermography utilizes the thermal-emission spectrum in the semitransparent spectral region of the target object to extract its temperature as a function of depth, in contrast with conventional thermography, which uses the spectrally integrated thermally emitted power to measure the surface temperature. Coupled with two-dimensional imaging, for example using an infrared hyperspectral camera or scanning a single-pixel spectrometer, this technique can yield volumetric temperature distributions. We carried out a proof-of-concept experiment on an asymmetrically heated fused-silica window, extracting the temperature distribution throughout the sample. Depth thermography may enable noncontact volumetric temperature measurements of microscopic objects such as multilayer electronic devices or macroscopic volumes of liquids and gases, as well as simultaneous all-optical measurements of optical and thermal properties of materials.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available