{"title":"环形激光腔中的克尔非线性和非互易","authors":"C. Bosco, L. Acioli","doi":"10.1109/CLEOE.1998.719498","DOIUrl":null,"url":null,"abstract":"The nonreciprocal effect introduced by the gain media in a Kerr-lens-modelocked laser is considered. For real nonlinear optical susceptibilities in media without gain or losses phase conjugation is reciprocal[1], the same happening in a cavity where gain is neglected. Once gain is considered, the position of the laser crystal may discriminate between the clockwise and anticlockwise beams through the self-focusing effect, similar to what happens in a nonlinear amplifying loop mirror (NALM). In the present analysis this assymmetry is attributed to the gain dependence on the position z within the laser crystal, due to pump beam depletion. The laser beam that propagates in the same direction as the pump beam acquires a larger nonlinear phase shift, compared to the counterpropagating beam, and therefore suffers a greater self-focusing effect.","PeriodicalId":404067,"journal":{"name":"CLEO/Europe Conference on Lasers and Electro-Optics","volume":"16 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1998-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Kerr Nonlinearity and Nonreciprocity in a Ring Laser Cavity\",\"authors\":\"C. Bosco, L. Acioli\",\"doi\":\"10.1109/CLEOE.1998.719498\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The nonreciprocal effect introduced by the gain media in a Kerr-lens-modelocked laser is considered. For real nonlinear optical susceptibilities in media without gain or losses phase conjugation is reciprocal[1], the same happening in a cavity where gain is neglected. Once gain is considered, the position of the laser crystal may discriminate between the clockwise and anticlockwise beams through the self-focusing effect, similar to what happens in a nonlinear amplifying loop mirror (NALM). In the present analysis this assymmetry is attributed to the gain dependence on the position z within the laser crystal, due to pump beam depletion. The laser beam that propagates in the same direction as the pump beam acquires a larger nonlinear phase shift, compared to the counterpropagating beam, and therefore suffers a greater self-focusing effect.\",\"PeriodicalId\":404067,\"journal\":{\"name\":\"CLEO/Europe Conference on Lasers and Electro-Optics\",\"volume\":\"16 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1998-09-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"CLEO/Europe Conference on Lasers and Electro-Optics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/CLEOE.1998.719498\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"CLEO/Europe Conference on Lasers and Electro-Optics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CLEOE.1998.719498","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Kerr Nonlinearity and Nonreciprocity in a Ring Laser Cavity
The nonreciprocal effect introduced by the gain media in a Kerr-lens-modelocked laser is considered. For real nonlinear optical susceptibilities in media without gain or losses phase conjugation is reciprocal[1], the same happening in a cavity where gain is neglected. Once gain is considered, the position of the laser crystal may discriminate between the clockwise and anticlockwise beams through the self-focusing effect, similar to what happens in a nonlinear amplifying loop mirror (NALM). In the present analysis this assymmetry is attributed to the gain dependence on the position z within the laser crystal, due to pump beam depletion. The laser beam that propagates in the same direction as the pump beam acquires a larger nonlinear phase shift, compared to the counterpropagating beam, and therefore suffers a greater self-focusing effect.