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Proceedings Paper

Selective spectral detection of continuum terahertz radiation
Author(s): P. Kaufmann; R. Marcon; A. Marun; A. S. Kudaka; E. Bortolucci; M. Beny Zakia; J. A. Diniz; M. M. Cassiano; P. Pereyra; R. Godoy; A. V. Timofeevsky; V. A. Nikolaev; A. M. Pereira Alves da Silva; L. O. T. Fernandes
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Paper Abstract

The knowledge of THz continuum spectra is essential to investigate the emission mechanisms by high energy particle acceleration processes. Technical challenges appear for obtaining selective spectral sensing in the far infrared range to diagnose radiation produced by solar flare burst emissions measured from space as well as radiation produced by high energy electrons in laboratory accelerators. Efforts are been carried out intended for the development of solar flare high cadence radiometers at two THz frequencies to operate outside the terrestrial atmosphere (i.e. at 3 and 7 THz). One essential requirement is the efficient suppression of radiation in the visible and near infrared. Experimental setups have been assembled for testing (a) THz transmission of "low-pass" filters: rough surface mirrors; membranes Zitex G110G and TydexBlack; (b) a fabricated 2.4 THz resonant grid band-pass filter transmission response for polarization and angle of incidence; (c) radiation response from distinct detectors: adapted commercial microbolometer array using HRFZ-Si window, pyroelectric module and Golay cell; qualitative detection of solar radiation at a sub-THz frequency has been tested with a microbolometer array placed at the focus of the 1.5 m reflector for submillimeter waves (SST) at El Leoncito, Argentina Andes.

Paper Details

Date Published: 15 July 2010
PDF: 10 pages
Proc. SPIE 7741, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V, 774125 (15 July 2010); doi: 10.1117/12.856930
Show Author Affiliations
P. Kaufmann, Univ. Presbiteriana Mackenzie (Brazil)
Univ. Estadual de Campinas (Brazil)
R. Marcon, Univ. Estadual de Campinas (Brazil)
Observatório Solar Bernard Lyot (Brazil)
A. Marun, Complejo Astronómico El Leoncito (Argentina)
A. S. Kudaka, Univ. Presbiteriana Mackenzie (Brazil)
E. Bortolucci, Univ. Estadual de Campinas (Brazil)
M. Beny Zakia, Univ. Estadual de Campinas (Brazil)
J. A. Diniz, Univ. Estadual de Campinas (Brazil)
M. M. Cassiano, Univ. Presbiteriana Mackenzie (Brazil)
P. Pereyra, Complejo Astronómico El Leoncito (Argentina)
R. Godoy, Complejo Astronómico El Leoncito (Argentina)
A. V. Timofeevsky, Tydex JS Co. (Russian Federation)
V. A. Nikolaev, Tydex JS Co. (Russian Federation)
A. M. Pereira Alves da Silva, Univ. Estadual de Campinas (Brazil)
L. O. T. Fernandes, Univ. Presbiteriana Mackenzie (Brazil)


Published in SPIE Proceedings Vol. 7741:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V
Wayne S. Holland; Jonas Zmuidzinas, Editor(s)

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