ABRAHAM, Emmanuel; CAHYADI, Harsono; BROSSARD, Mathilde; DEGERT, Jérôme; FREYSZ, Eric; YASUI, Takeshi

doi:10.1364/OE.24.005203.v002

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ABRAHAM, Emmanuel
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

CAHYADI, Harsono
Institute of Technology and Science (Tokushima)

BROSSARD, Mathilde
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
New Terahertz Imaging Systems [NeTHIS]

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Optics Express. 2016, vol. 24, n° 5, p. 5203-5211

Optical Society of America - OSA Publishing

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Wavefront characterization of terahertz pulses is essential to optimize far-field intensity distribution of time-domain (imaging) spectrometers or increase the peak power of intense terahertz sources. In this paper, we report on the wavefront measurement of terahertz pulses using a Hartmann sensor associated with a 2D electro-optic imaging system composed of a ZnTe crystal and a CMOS camera. We quantitatively determined the deformations of planar and converging spherical wavefronts using the modal Zernike reconstruction least-squares method. Associated with deformable mirrors, the sensor will also open the route to terahertz adaptive optics.< Leer menos

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Remote sensing and sensors

Terahertz imaging

Wave propagation

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Development of a wavefront sensor for terahertz pulses

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