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Ultrabroadband THz emission with controlled wave-front from LTG GaAs large area interdigitated photoconductive antenna
Acte de colloque

Ultrabroadband THz emission with controlled wave-front from LTG GaAs large area interdigitated photoconductive antenna

M. Baillergeau, T. Nirrengarten, K. Maussang, A. Acquaviva, J. Palomo, S. Dhillon, J. Tignon, J. Mangeney et IEEE
International Conference on Infrared, Millimeter, and Terahertz Waves (Print), pp.1-2
International Conference on Infrared Millimeter and Terahertz Waves
01/08/2015

Résumé

Engineering Engineering, Electrical & Electronic Physical Sciences Physics Physics, Applied Science & Technology Technology
We demonstrate THz pulses emitted by LTC GaAs large area interdigitated photoconductive antennas with frequency components from 0.3 to 20 THz. The THz radiation is characterized with a 20-mu m thick ZnTe crystal and the dynamic range reaches 60 dB. Under an original optical excitation scheme, the emitted THz pulses show frequency-independent spherical wave front, which provides focusing of the THz beam close to the diffraction limit.

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