Terahertz adaptive optics with a deformable mirror
BROSSARD, Mathilde
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
New Terahertz Imaging Systems [NeTHIS]
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Laboratoire Ondes et Matière d'Aquitaine [LOMA]
New Terahertz Imaging Systems [NeTHIS]
BROSSARD, Mathilde
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
New Terahertz Imaging Systems [NeTHIS]
< Réduire
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
New Terahertz Imaging Systems [NeTHIS]
Langue
en
Article de revue
Ce document a été publié dans
Optics Letters. 2018, vol. 43, n° 7, p. 1594-1597
Optical Society of America - OSA Publishing
Résumé en anglais
We report on the wavefront correction of a terahertz (THz) beam using adaptive optics, which requires both a wave-front sensor that is able to sense the optical aberrations, as well as a wavefront corrector. The wavefront ...Lire la suite >
We report on the wavefront correction of a terahertz (THz) beam using adaptive optics, which requires both a wave-front sensor that is able to sense the optical aberrations, as well as a wavefront corrector. The wavefront sensor relies on a direct 2D electro-optic imaging system composed of a ZnTe crystal and a CMOS camera. By measuring the phase variation of the THz electric field in the crystal, we were able to minimize the geometrical aberrations of the beam, thanks to the action of a deformable mirror. This phase control will open the route to THz adaptive optics in order to optimize the THz beam quality for both practical and fundamental applications.< Réduire
Mots clés en anglais
Remote sensing and sensors
Terahertz imaging
Aberration compensation
Active or adaptive optics
Origine
Importé de halUnités de recherche