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Proceedings Paper

Microfabricated bolometer based on a vertically aligned carbon nanotube absorber
Author(s): Anna Vaskuri; Michelle S. Stephens; Nathan A. Tomlin; Christopher S. Yung; Andrew J. Walowitz; Cameron Straatsma; David Harber; John H. Lehman
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Paper Abstract

We have designed a microfabricated planar absolute radiometer based on a vertically aligned carbon nanotube (VACNT) absorber and an electrical power substitution method. The radiometer is designed to operate at room temperature and to be capable of measuring laser powers up to 300 mW from 300 nm to 2300 nm with an expected expanded uncertainty of 0.06% (k = 2). The electrical power substitution capability makes the radiometer absolute and traceable to the international system (SI) of units. The new bolometer is currently under construction and will replace NIST's 50 year old detector standard for free-space CW laser power measurements. We also study the possibility of reducing background temperature sensitivity by optimizing the spectral selectivity of the VACNT forest with a photonic crystal structure.

Paper Details

Date Published: 2 March 2020
PDF: 12 pages
Proc. SPIE 11269, Synthesis and Photonics of Nanoscale Materials XVII, 112690L (2 March 2020); doi: 10.1117/12.2545254
Show Author Affiliations
Anna Vaskuri, National Institute of Standards and Technology (United States)
Michelle S. Stephens, National Institute of Standards and Technology (United States)
Nathan A. Tomlin, National Institute of Standards and Technology (United States)
Christopher S. Yung, National Institute of Standards and Technology (United States)
Andrew J. Walowitz, National Institute of Standards and Technology (United States)
Cameron Straatsma, Univ. of Colorado (United States)
David Harber, Univ. of Colorado (United States)
John H. Lehman, National Institute of Standards and Technology (United States)


Published in SPIE Proceedings Vol. 11269:
Synthesis and Photonics of Nanoscale Materials XVII
Jan J. Dubowski; David B. Geohegan; Andrei V. Kabashin, Editor(s)

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