{"title":"原子系统在双色激光相互作用场的不同频率比率下产生太赫兹辐射","authors":"S. Yu. Stremoukhov","doi":"10.1134/s1062873824706937","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The generation of terahertz radiation by atomic systems interacting with femtosecond two-color laser fields <span>\\(\\left( {{{\\omega }_{1}} + {{\\omega }_{2}}} \\right)\\)</span> formed by the fundamental harmonic of a laser source <span>\\(\\left( {{{\\omega }_{1}}} \\right)\\)</span> and radiation with frequencies varying over a wide range <span>\\(\\left( {{{\\omega }_{2}}} \\right)\\)</span> is studied. It is shown that the efficiency of the generation of terahertz radiation grows when ratio <span>\\(({{\\omega }_{2}}{\\text{/}}{{\\omega }_{1}})\\)</span> of frequencies between components of the two-color field is close but not equal to 2, and difference <span>\\(\\left| {{{\\omega }_{2}} - 2{{\\omega }_{1}}} \\right|\\)</span> corresponds to the terahertz range. A numerical experiment is performed using laser sources with wavelengths from the near- to far-infrared range.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":null,"pages":null},"PeriodicalIF":0.4800,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Generation of Terahertz Radiation by Atomic Systems at Different Ratios of Frequencies between Components of Interacting Two-Color Laser Fields\",\"authors\":\"S. Yu. Stremoukhov\",\"doi\":\"10.1134/s1062873824706937\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3 data-test=\\\"abstract-sub-heading\\\">Abstract</h3><p>The generation of terahertz radiation by atomic systems interacting with femtosecond two-color laser fields <span>\\\\(\\\\left( {{{\\\\omega }_{1}} + {{\\\\omega }_{2}}} \\\\right)\\\\)</span> formed by the fundamental harmonic of a laser source <span>\\\\(\\\\left( {{{\\\\omega }_{1}}} \\\\right)\\\\)</span> and radiation with frequencies varying over a wide range <span>\\\\(\\\\left( {{{\\\\omega }_{2}}} \\\\right)\\\\)</span> is studied. It is shown that the efficiency of the generation of terahertz radiation grows when ratio <span>\\\\(({{\\\\omega }_{2}}{\\\\text{/}}{{\\\\omega }_{1}})\\\\)</span> of frequencies between components of the two-color field is close but not equal to 2, and difference <span>\\\\(\\\\left| {{{\\\\omega }_{2}} - 2{{\\\\omega }_{1}}} \\\\right|\\\\)</span> corresponds to the terahertz range. A numerical experiment is performed using laser sources with wavelengths from the near- to far-infrared range.</p>\",\"PeriodicalId\":504,\"journal\":{\"name\":\"Bulletin of the Russian Academy of Sciences: Physics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.4800,\"publicationDate\":\"2024-07-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Bulletin of the Russian Academy of Sciences: Physics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1134/s1062873824706937\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"Physics and Astronomy\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of the Russian Academy of Sciences: Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1134/s1062873824706937","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Physics and Astronomy","Score":null,"Total":0}
引用次数: 0
摘要
AbstractThe generation of terahertz radiation by atomic systems interacting with femtecond two-(\left({{/omega }_{1}} + {{\omega }_{2}}} \right)\)相互作用产生的太赫兹辐射进行了研究。结果表明,当双色场各分量之间的频率之比\(({{\omega }_{2}}{text{/}}{{\omega }_{1}})\接近但不等于 2 时,太赫兹辐射的生成效率会增长,而差值\(\left| {{{\omega }_{2}} - 2{{\omega }_{1}}} \right|\)对应于太赫兹范围。我们使用波长从近红外到远红外的激光源进行了数值实验。
Generation of Terahertz Radiation by Atomic Systems at Different Ratios of Frequencies between Components of Interacting Two-Color Laser Fields
Abstract
The generation of terahertz radiation by atomic systems interacting with femtosecond two-color laser fields \(\left( {{{\omega }_{1}} + {{\omega }_{2}}} \right)\) formed by the fundamental harmonic of a laser source \(\left( {{{\omega }_{1}}} \right)\) and radiation with frequencies varying over a wide range \(\left( {{{\omega }_{2}}} \right)\) is studied. It is shown that the efficiency of the generation of terahertz radiation grows when ratio \(({{\omega }_{2}}{\text{/}}{{\omega }_{1}})\) of frequencies between components of the two-color field is close but not equal to 2, and difference \(\left| {{{\omega }_{2}} - 2{{\omega }_{1}}} \right|\) corresponds to the terahertz range. A numerical experiment is performed using laser sources with wavelengths from the near- to far-infrared range.
期刊介绍:
Bulletin of the Russian Academy of Sciences: Physics is an international peer reviewed journal published with the participation of the Russian Academy of Sciences. It presents full-text articles (regular, letters to the editor, reviews) with the most recent results in miscellaneous fields of physics and astronomy: nuclear physics, cosmic rays, condensed matter physics, plasma physics, optics and photonics, nanotechnologies, solar and astrophysics, physical applications in material sciences, life sciences, etc. Bulletin of the Russian Academy of Sciences: Physics focuses on the most relevant multidisciplinary topics in natural sciences, both fundamental and applied. Manuscripts can be submitted in Russian and English languages and are subject to peer review. Accepted articles are usually combined in thematic issues on certain topics according to the journal editorial policy. Authors featured in the journal represent renowned scientific laboratories and institutes from different countries, including large international collaborations. There are globally recognized researchers among the authors: Nobel laureates and recipients of other awards, and members of national academies of sciences and international scientific societies.