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Proceedings Paper

Portable real-time THz imaging setup based on QC lasers
Author(s): Christopher Bonzon; Giacomo Scalari; Maria I. Amanti; Fabrizio Castellano; Dana Turcinkova; Mattias Beck; Jerome Faist
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Paper Abstract

A portable, stand-alone, real-time THz imaging system for high resolution is presented. The total weight of the apparatus is less than 15 kg and its physical dimension is of approximately (65 cm)3. A quantum cascade laser emitting at 3.4 THz based on a third-order distributed feedback cavity is used as radiation source for transmission and reflection imaging modes. We report real-time THz imaging with a bolometric camera operating at 15 Hz producing movies with a resolution of 120 x 160 pixels. With the help of a Stirling motor cryocooler the laser operates in continuous-wave at 40 K with more than 1 mW output power and less than 300 mW of power consumption. We were able to image small objects employing refractive elements that we manufactured in high density polyethylene achieving a resolution of twice the wavelength.

Paper Details

Date Published: 22 February 2012
PDF: 8 pages
Proc. SPIE 8261, Terahertz Technology and Applications V, 82610N (22 February 2012); doi: 10.1117/12.908569
Show Author Affiliations
Christopher Bonzon, ETH Zurich (Switzerland)
Giacomo Scalari, ETH Zurich (Switzerland)
Maria I. Amanti, ETH Zurich (Switzerland)
Fabrizio Castellano, ETH Zurich (Switzerland)
Dana Turcinkova, ETH Zurich (Switzerland)
Mattias Beck, ETH Zurich (Switzerland)
Jerome Faist, ETH Zurich (Switzerland)

Published in SPIE Proceedings Vol. 8261:
Terahertz Technology and Applications V
Laurence P. Sadwick; Créidhe M. O'Sullivan, Editor(s)

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