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arXiv · 2405.10733

Resonantly enhanced terahertz four-wave mixing in fluorides

Eva Noskovicova·Martin Koys·Monika Jerigova·Dusan Velic·Dusan Lorenc
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Abstract

Converting a THz signal into the optical domain is of great interest for THz sensing and spectroscopy. Here intense broadband THz pulses with a central frequency of $\Omega$$_{THz}$ are mixed with an optical pump at $\omega$$_p$ and a signal is observed at a wavelength of $\omega$$_s$ = 2($\omega$$_p$ - $\Delta\omega$$_p$) - $\Omega_{THz}$ with the detuning $\omega$$_p$ - $\Delta\omega$$_p$ being due to pump pulse spectral broadening. The observed THz-FWM signal close to 400 nm is shown to result from a resonantly amplified four-wave mixing in CaF$_2$, BaF$_2$ and MgF$_2$.

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Eva Noskovicova, Martin Koys, Monika Jerigova, Dusan Velic, Dusan Lorenc. 2024-05-17. Resonantly enhanced terahertz four-wave mixing in fluorides. https://arxiv.org/abs/2405.10733

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