ABRAHAM, Emmanuel; OGAWA, Takayuki; BROSSARD, Mathilde; YASUI, Takeshi

doi:10.1109/JSTQE.2016.2638540

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

OGAWA, Takayuki
Graduate School of Advanced Technology and Science [Tokushima]

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

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IEEE Journal of Selected Topics in Quantum Electronics. 2017-07, vol. 23, n° 4, p. 8400505 (1 - 5)

Institute of Electrical and Electronics Engineers

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Wavefront characterization of terahertz beams is useful for various applications such as terahertz spectroscopy and imaging. In this paper, we report on the aberration measurement of a terahertz beam issued from a quantum cascade laser. By using a terahertz camera and a two-wave noncommon path interferom-eter, we measured the wavefront distortions. As an example, we evaluated the Zernike coefficients giving the aberrations of spherical wavefronts induced by a converging lens. Associated with a deformable mirror, the sensor will open the route to terahertz adaptive optics.< Leer menos

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Terahertz imaging

Wavefront

Optical aberrations

Quantum cascade laser QCL

Interferometer

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Interferometric Terahertz Wavefront Analysis

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