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Proceedings Article

Selective spectral detection of continuum terahertz radiation

[+] Author Affiliations
P. Kaufmann

Univ. Presbiteriana Mackenzie (Brazil) and Univ. Estadual de Campinas (Brazil)

R. Marcon

Univ. Estadual de Campinas (Brazil) and Observatório Solar Bernard Lyot (Brazil)

A. Marun, P. Pereyra, R. Godoy

Complejo Astronómico El Leoncito (Argentina)

A. S. Kudaka, M. M. Cassiano, L. O. T. Fernandes

Univ. Presbiteriana Mackenzie (Brazil)

E. Bortolucci, M. B. Zakia, J. A. Diniz, A. M. Pereira Alves da Silva

Univ. Estadual de Campinas (Brazil)

A. V. Timofeevsky, V. A. Nikolaev

Tydex JS Co. (Russian Federation)

Proc. SPIE 7741, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V, 774125 (July 15, 2010); doi:10.1117/12.856930
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From Conference Volume 7741

  • Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V
  • Wayne S. Holland; Jonas Zmuidzinas
  • San Diego, California, USA | June 27, 2010

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.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

P. Kaufmann ; R. Marcon ; A. Marun ; A. S. Kudaka ; E. Bortolucci, et al.
"Selective spectral detection of continuum terahertz radiation", Proc. SPIE 7741, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V, 774125 (July 15, 2010); doi:10.1117/12.856930; http://dx.doi.org/10.1117/12.856930


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