Share Email Print

Proceedings Paper

Some properties of a room temperature THz detection array
Author(s): Irmantas Kašalynas; Aurèle J. L. Adam; Tjeerd O. Klaassen; Niels J. Hovenier; Grégory Pandraud; Ventzeslav P. Iordanov; Pasqualina M. Sarro
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Detection peculiarities of an un-cooled (room temperature) 8x8 pixel array designed to image broadband THz radiation were investigated. Each pixel consists of a thin conductive film absorber on a dielectric membrane with thermopile temperature readout. It was designed and tested for four combinations of two different types of absorber and thermopile materials. The photo-response profile, determined by scanning the pixels through the focus of a THz laser beam, was wider than expected from a 2-D convolution of the Gaussian beam and the absorber surface. Also the time response did depend on the position of the beam relative to the pixel. Simulations show that those properties are due to the fact that also the thermopiles absorb THz radiation. For the best composition of absorber and thermopile, the responsivity, the noise equivalent power, and the bandwidth were estimated to be of 28 V/W, 5x10-9 W/Hz1/2 and 50 Hz, respectively.

Paper Details

Date Published: 25 January 2007
PDF: 6 pages
Proc. SPIE 6596, Advanced Optical Materials, Technologies, and Devices, 65960J (25 January 2007); doi: 10.1117/12.726404
Show Author Affiliations
Irmantas Kašalynas, Delft Univ. of Technology (Netherlands)
Semiconductor Physics Institute (Lithuania)
Aurèle J. L. Adam, Delft Univ. of Technology (Netherlands)
Tjeerd O. Klaassen, Delft Univ. of Technology (Netherlands)
Niels J. Hovenier, Delft Univ. of Technology (Netherlands)
Grégory Pandraud, Delft Univ. of Technology (Netherlands)
Ventzeslav P. Iordanov, Delft Univ. of Technology (Netherlands)
Pasqualina M. Sarro, Delft Univ. of Technology (Netherlands)

Published in SPIE Proceedings Vol. 6596:
Advanced Optical Materials, Technologies, and Devices
Steponas Ašmontas; Jonas Gradauskas, Editor(s)

© SPIE. Terms of Use
Back to Top