Selective spectral detection of continuum terahertz radiation

Artigo de evento
Data de publicação
Proceedings of SPIE - The International Society for Optical Engineering
Citações (Scopus)
Kaufmann P.
Marcon R.
Marun A.
Kudaka A.S.
Bortolucci E.
Zakia M.B.
Diniz J.A.
Cassiano M.M.
Pereyra P.
Godoy R.
Timofeevsky A.V.
Nikolaev V.A.
Pereira Alves Da Silva A.M.
Fernandes L.O.T.
Título da Revista
ISSN da Revista
Título de Volume
Membros da banca
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 SPIE.
Assuntos Scopus
Angle of Incidence , Argentina , Continuum spectra , Emission mechanism , Experimental setup , Far infrared , Golay cells , High-energy electron , High-energy particles , Low-pass , Microbolometer arrays , Radiation response , Rough surfaces , Solar flare , Spectral detection , Spectral sensing , Technical challenges , Terahertz radiation , THz frequencies , THz radiation , THz radiometers , THz sensors , Visible and near infrared
DOI (Texto completo)