The propagation effects in ultrafast nonlinear electro-optical modulation in thin film on a substrate

The propagation of short optical and terahertz pulses through a noncentrosymmetric (ferroelectric) film on a centrosymmetric substrate is considered. The effect of terahertz electro-induced second harmonic generation is observed in the film. It is shown that the difference in the group velocities of...

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Bibliographic Details
Published in:Journal of physics. Conference series 2020-05, Vol.1556 (1), p.12009
Main Authors: Bilyk, V R, Grishunin, K A, Sherstyuk, N E, Mishina, E D, Ovchinnikov, A V, Chefonov, O V
Format: Article
Language:English
Subjects:
Electro-optical effect
Ferroelectricity
Nonlinear response
Optical pulses
Physics
Propagation
Second harmonic generation
Substrates
Thin films
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Summary:The propagation of short optical and terahertz pulses through a noncentrosymmetric (ferroelectric) film on a centrosymmetric substrate is considered. The effect of terahertz electro-induced second harmonic generation is observed in the film. It is shown that the difference in the group velocities of THz and optical pulses leads to a non-mirror-like dependence of the transient nonlinear-optical response upon a mirror image of the film-substrate structure relative to its surface.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1556/1/012009