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Performance-Enhanced Bolometric Terahertz Detectors Based on V2O5 for 15 to 30 THz

Sumesh, M A and Karanth, S P and Thomas, Beno and Rao, G M and Viswanathan, M and Chakraborty, P and Rao, G N (2017) Performance-Enhanced Bolometric Terahertz Detectors Based on V2O5 for 15 to 30 THz. In: JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES, 38 (2). pp. 135-142.

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Official URL: http://dx.doi.org/10.1007/s10762-016-0326-1

Abstract

Terahertz (THz) radiation perception using uncooled detectors are gaining importance due to the increasing demands in the areas of military, space, and industrial, medical, and surveillance applications. In spite of the efforts of researchers to fill the THz gap, there exists a need for detectors in the range between 15 THz and 30 THz. In this paper, we discuss the development of bolometric detectors whose performance is enhanced by an optical immersion technique and their characterization in the aforesaid range of frequencies. These detectors are characterized by high specific detectivity (D*) of 1.28 x 10(9) cmHz(1/2) W-1 and high radiometric resolution (noise-equivalent temperature difference = 26 mK) and are fast enough for bolometric detectors (time constant = 1.7 ms), which make them suitable for spectroscopic and imaging applications.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA
Department/Centre: Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Depositing User: Id for Latest eprints
Date Deposited: 09 Mar 2017 06:07
Last Modified: 09 Mar 2017 06:07
URI: http://eprints.iisc.ac.in/id/eprint/56355

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