{"title":"Generation of the Second Optical Harmonic under the Action of Narrowband Terahertz Pulses in the Antiferromagnet NiO","authors":"O. V. Chefonov, A. V. Ovchinnikov, M. B. Agranat","doi":"10.1134/s0018151x23060147","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The study examines aspects of the generation of the second optical harmonic in the centrosymmetric antiferromagnet 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 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.</p>","PeriodicalId":13163,"journal":{"name":"High Temperature","volume":null,"pages":null},"PeriodicalIF":1.0000,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"High Temperature","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1134/s0018151x23060147","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
The study examines aspects of the generation of the second optical harmonic in the centrosymmetric antiferromagnet 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 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.
期刊介绍：
High Temperature is an international peer reviewed journal that publishes original papers and reviews written by theoretical and experimental researchers. The journal deals with properties and processes in low-temperature plasma; thermophysical properties of substances including pure materials, mixtures and alloys; the properties in the vicinity of the critical point, equations of state; phase equilibrium; heat and mass transfer phenomena, in particular, by forced and free convections; processes of boiling and condensation, radiation, and complex heat transfer; experimental methods and apparatuses; high-temperature facilities for power engineering applications, etc. The journal reflects the current trends in thermophysical research. It presents the results of present-day experimental and theoretical studies in the processes of complex heat transfer, thermal, gas dynamic processes, and processes of heat and mass transfer, as well as the latest advances in the theoretical description of the properties of high-temperature media.
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