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JOURNALS // Teplofizika vysokikh temperatur // Archive

TVT, 2023 Volume 61, Issue 6, Pages 920–925 (Mi tvt11906)

This article is cited in 1 paper

New energetics and Modern Technologies

Generation of the second optical harmonic under the action of narrowband terahertz pulses in the antiferromagnet $\rm NiO$

O. V. Chefonov, A. V. Ovchinnikov, M. B. Agranat

Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow

Abstract: The study examines aspects of the generation of the second optical harmonic in the centrosymmetric antiferromagnet $\rm NiO$ when exposed to narrowband terahertz pulses with an electric field strength on the order of $1$ MV/cm. It was found that when exposed to terahertz pulses with a frequency of $1$ THz, which corresponds to the antiferromagnetic resonance frequency of $\rm NiO$, a significant decrease in the intensity of the second harmonic is observed versus exposure to pulses with a frequency of $1.5$ THz. It is shown that the observed decrease in the intensity of second harmonic generation can be explained by multipath interference during the propagation of a narrowband terahertz pulse in a thin sample.

UDC: 538.9

Received: 15.06.2023
Revised: 14.11.2023
Accepted: 04.12.2023

DOI: 10.31857/S0040364423060042


 English version:
High Temperature, 2023, 61:6, 846–851


© Steklov Math. Inst. of RAS, 2025