Direct Wavefront Measurement of Terahertz Pulses Using Two-Dimensional Electro-Optic Imaging
- Resource Type
- Periodical
- Authors
- Brossard, M.; Cahyadi, H.; Perrin, M.; Degert, J.; Freysz, E.; Yasui, T.; Abraham, E.
- Source
- IEEE Transactions on Terahertz Science and Technology IEEE Trans. THz Sci. Technol. Terahertz Science and Technology, IEEE Transactions on. 7(6):741-746 Nov, 2017
- Subject
- Fields, Waves and Electromagnetics
Laser beams
Crystals
Optical imaging
Optical pulses
Ultrafast optics
Optical sensors
Optical aberrations
sensor
terahertz (THz)
wavefront
- Language
- ISSN
- 2156-342X
2156-3446
We report on the development of a wavefront sensor for terahertz pulses using a direct two-dimensional electro-optic imaging system composed of a ZnTe crystal and a CMOS camera. By measuring the phase variation of the terahertz electric field in the crystal plane, we are able to reconstruct the terahertz (THz) wavefront in order to determine the optical aberrations of the optical system. Associated with deformable mirrors or specifically designed optics, the sensor will open the route to terahertz adaptive optics.