Terahertz generation from ZnTe optically pumped above and below the bandgap - PHOTO
Article Dans Une Revue Optics Express Année : 2021

Terahertz generation from ZnTe optically pumped above and below the bandgap

Dongwei Zhai
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Frédéric Garet
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Jean-Louis Coutaz

Résumé

We report on the generation of THz waves through optical rectification in ZnTe of femtosecond laser pulses whose photon energy is tuned from below to above the ZnTe bandgap energy. The THz signal exhibits a pronounced peak at the bandgap energy, at THz frequencies for which losses in ZnTe remain small. This peak is likely due to the resonance of the ZnTe nonlinear susceptibility in the vicinity of the bandgap.
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Dates et versions

hal-03354386 , version 1 (24-09-2021)

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Dongwei Zhai, Emilie Hérault, Frédéric Garet, Jean-Louis Coutaz. Terahertz generation from ZnTe optically pumped above and below the bandgap. Optics Express, 2021, 29 (11), pp.17491. ⟨10.1364/OE.421282⟩. ⟨hal-03354386⟩
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