Evaluation of a pyroelectric detector with a carbon multiwalled nanotube black coating in the infrared

Applied Optics
E TheocharousJ H Lehman

Abstract

The performance of a pyroelectric detector with a carbon multiwalled nanotube coating was evaluated in the 0.9-14 microm wavelength range. The relative spectral responsivity of this detector was shown to be flat over most of the wavelength range examined, and the spectral flatness was shown to be comparable to the best infrared black coatings currently available. This finding is promising because black coatings with spectrally flat absorbance profiles are usually associated with the highest absorbance values. The performance of the detector (in terms of noise equivalent power and specific detectivity) was limited by the very thick (250 microm thick) LiNbO3 pyroelectric crystal onto which the coating was deposited. The responsivity of this detector was shown to be linear in the 0.06-2.8 mW radiant power range, and its spatial uniformity was comparable to that of other pyroelectric detectors that use different types of black coating. The carbon nanotube coatings were reported to be much more durable than other infrared black coatings, such as metal blacks, that are commonly used to coat thermal detectors in the infrared. This, in combination with their excellent spectral flatness, suggests that carbon nanotube coatings appear ext...Continue Reading

References

Aug 5, 2004·Applied Optics·Evangelos TheocharousNigel P Fox
Feb 25, 2005·Applied Optics·John H LehmanAnne C Dillon
May 1, 1974·Applied Optics·W R Blevin, J Geist

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Citations

Oct 5, 2013·The Review of Scientific Instruments·B N ShivananjuAbha Misra
Apr 3, 2009·Proceedings of the National Academy of Sciences of the United States of America·Kohei MizunoKenji Hata
Mar 21, 2013·ACS Applied Materials & Interfaces·R BhandavatG Singh
Jun 21, 2008·Applied Optics·E Theocharous
Aug 5, 2010·Nanotechnology·Annalisa ConvertinoFaustino Martelli
Jan 26, 2011·Optics Letters·Alon Ludwig, Kevin J Webb
Jun 8, 2018·Optics Express·Dušan GrujićBranislav Jelenković
Jun 8, 2021·Photoacoustics·Jussi RossiMarkku Vainio

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