PRADÈRE, Christophe; CAUMES, Jean-Pascal; BALAGEAS, Daniel; SALORT, Simon; ABRAHAM, Emmanuel; CHASSAGNE, Bruno; BATSALE, Jean-Christophe

doi:10.3166/qirt.7.217-235

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

PRADÈRE, Christophe
Transferts, écoulements, fluides, énergétique [TREFLE]

CAUMES, Jean-Pascal
ALPhANOV

BALAGEAS, Daniel
Transferts, écoulements, fluides, énergétique [TREFLE]

Langue

Communication dans un congrès

Ce document a été publié dans

2010-07-27, Québec. 2011, vol. 7, n° 2, p. 217-235

Résumé en anglais

Recent advances for the measurement of TeraHertz (THz) radiation by using original IR temperature flux sensors are presented. The bolometer principle is used for designing simple thermal converters for THz radiations (measurement of the temperature increase of a sensitive absorber). Most of these sensors are efficient, sensitive and fast enough for quantitative measurement of THz source power as well as for 2D and 3D THz imaging. By combining optical and thermal technologies, we extend and adapt the use of thermal sensors to large THz wavelength till 3 mm (0.1 THz). A large variety of mono- or arrayed- thermal sensors is used and optimized for real-time room temperature THz imaging using adapted IR focal-plane microbolometers array (FPMA) camera. Optimisation and adaptation of such FPMA is discussed and a new arrayed prototype device of THz-Thermal Converter, "TTC", for full-field real-time THz imaging is presented. This small size, low cost and efficient prototype design is discussed from the thermal point of view and is characterized using a compact powerful THz source. Their sensitivity is evaluated and the obtained 2D and 3D images clearly illustrates the high potential of this new kind of THz camera. Finally, it is shown that non-arrayed extended plane TTCs (EMIR sensitivescreens) coupled to FPA cameras produce THz images free of diffraction phenomena.< Réduire

Mots clés en anglais

TeraHertz

imaging

THz thermal converter

THz camera

EMIR method

Métadonnées

Licence d’utilisation du document

Photothermal converters for quantitative 2D and 3D real-time TeraHertz imaging

Langue

Ce document a été publié dans

Résumé en anglais

Mots clés en anglais

DOI

Origine

Unités de recherche