http://www.cnr.it/ontology/cnr/individuo/prodotto/ID181213

A Fast Terahertz Spectrometer Based on Frequency Selective Surface Filters (Articolo in rivista)

Type

Label

A Fast Terahertz Spectrometer Based on Frequency Selective Surface Filters (Articolo in rivista) (literal)

Anno

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

Alternative label

P. Carelli, F. Chiarello, S. Cibella, A. Di Gaspare, R. Leoni, M. Ortolani, G. Torrioli (2012)
A Fast Terahertz Spectrometer Based on Frequency Selective Surface Filters
in Journal of infrared, millimeter, and terahertz waves (Internet)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

P. Carelli, F. Chiarello, S. Cibella, A. Di Gaspare, R. Leoni, M. Ortolani, G. Torrioli (literal)

Rivista

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

DIEI, Università dell ' Aquila Via Giovanni Gronchi 18, 67100 L ' Aquila, Italy; CNR-IFN, Institute for Photonics and Nanotechnologies, via Cineto Romano 42, 00156 Rome, Italy (literal)

Titolo

A Fast Terahertz Spectrometer Based on Frequency Selective Surface Filters (literal)

Abstract

We present a fast spectrometer working in the 0.7-4.8 THz range. Broadband radiation from a blackbody source is focused first on a rotating silicon wafer, whose surface was patterned with 18 metal band-pass filters, then on the sample under test and finally is detected by a superconducting microbolometer with microsecond time constant. The bolometer sensor is coupled to a spiral antenna whose frequency band matches the spectral range of the filters. The spectral resolution is set by the filters quality factor of about 3. A dynamic range of 100 and a S/N ratio of 20 are achieved by integrating for less than 10 second. The detector can operate up to 6 K in a closed-cycle cooler, hence making the present apparatus suitable for building up a simple terahertz video-rate spectrometer. (literal)

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