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Multiwall carbon nanotube absorber on a thin-film lithium niobate pyroelectric detector

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Abstract

Multiwall carbon nanotubes (MWNTs) were applied in a bulk layer to a pyroelectric film to increase the detector sensitivity nearly fourfold without a substantial penalty to the low-frequency response (4100Hz). In addition, the spectral sensitivity over the wavelength range from 600 to 1800nm was uniformly enhanced, with variations less than 1%. The results demonstrate the suitability of MWNTs as an efficient thermal absorber having low thermal mass.

© 2007 Optical Society of America

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