{"title":"二能级系统中的最低阶光学二次谐波过程","authors":"B.K. Mohanty","doi":"10.1016/0031-8914(74)90287-0","DOIUrl":null,"url":null,"abstract":"<div><p>The influence of various physical parameters on the lowest-order second-harmonic process in a model solid is investigated. The medium is assumed to consist of two-level atoms obeying a simple harmonic-oscillator velocity distribution. It is seen that a definite phase relationship between the incident and the emergent fields is necessary for efficient second-harmonic conversion. In addition, the second-harmonic field and the quality factor are seen to depend on parameters like thickness of medium, relaxation time, level population and motion of the atoms. A comparison is made between this process and parametric oscillations.</p></div>","PeriodicalId":55605,"journal":{"name":"Physica","volume":"77 1","pages":"Pages 192-202"},"PeriodicalIF":0.0000,"publicationDate":"1974-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0031-8914(74)90287-0","citationCount":"1","resultStr":"{\"title\":\"Lowest-order optical second-harmonic process in a two-level system\",\"authors\":\"B.K. Mohanty\",\"doi\":\"10.1016/0031-8914(74)90287-0\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The influence of various physical parameters on the lowest-order second-harmonic process in a model solid is investigated. The medium is assumed to consist of two-level atoms obeying a simple harmonic-oscillator velocity distribution. It is seen that a definite phase relationship between the incident and the emergent fields is necessary for efficient second-harmonic conversion. In addition, the second-harmonic field and the quality factor are seen to depend on parameters like thickness of medium, relaxation time, level population and motion of the atoms. A comparison is made between this process and parametric oscillations.</p></div>\",\"PeriodicalId\":55605,\"journal\":{\"name\":\"Physica\",\"volume\":\"77 1\",\"pages\":\"Pages 192-202\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1974-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0031-8914(74)90287-0\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Physica\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0031891474902870\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physica","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0031891474902870","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Lowest-order optical second-harmonic process in a two-level system
The influence of various physical parameters on the lowest-order second-harmonic process in a model solid is investigated. The medium is assumed to consist of two-level atoms obeying a simple harmonic-oscillator velocity distribution. It is seen that a definite phase relationship between the incident and the emergent fields is necessary for efficient second-harmonic conversion. In addition, the second-harmonic field and the quality factor are seen to depend on parameters like thickness of medium, relaxation time, level population and motion of the atoms. A comparison is made between this process and parametric oscillations.