{"title":"电流各向异性对光折变晶体自聚焦的影响","authors":"N. Korneev","doi":"10.1109/CLEOE.2000.909903","DOIUrl":null,"url":null,"abstract":"Summary form only given. Photorefractive ferroelectrics have quite strong anisotropy of photocurrent. In barium titanate the typical ratio between conductivities in a- and c-directions is 14-20:1. In strontium barium niobate (SBN) this ratio is 1:3, ie. in this crystal the conductivity is higher along the c-axis, whereas in BaTiO/sub 3/ it is higher along the a-axis. Previous analysis of circular beam self-focusing (2D screening solitons) was not taking this factor into account. We demonstrate numerically that the existing anisotropy can dramatically affect the shape of self-focused beam.","PeriodicalId":250878,"journal":{"name":"Conference Digest. 2000 Conference on Lasers and Electro-Optics Europe (Cat. No.00TH8505)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2000-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of current anisotropy on self-focusing in photorefractive crystals\",\"authors\":\"N. Korneev\",\"doi\":\"10.1109/CLEOE.2000.909903\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Summary form only given. Photorefractive ferroelectrics have quite strong anisotropy of photocurrent. In barium titanate the typical ratio between conductivities in a- and c-directions is 14-20:1. In strontium barium niobate (SBN) this ratio is 1:3, ie. in this crystal the conductivity is higher along the c-axis, whereas in BaTiO/sub 3/ it is higher along the a-axis. Previous analysis of circular beam self-focusing (2D screening solitons) was not taking this factor into account. We demonstrate numerically that the existing anisotropy can dramatically affect the shape of self-focused beam.\",\"PeriodicalId\":250878,\"journal\":{\"name\":\"Conference Digest. 2000 Conference on Lasers and Electro-Optics Europe (Cat. No.00TH8505)\",\"volume\":\"51 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2000-09-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Conference Digest. 2000 Conference on Lasers and Electro-Optics Europe (Cat. No.00TH8505)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/CLEOE.2000.909903\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Conference Digest. 2000 Conference on Lasers and Electro-Optics Europe (Cat. No.00TH8505)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CLEOE.2000.909903","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Influence of current anisotropy on self-focusing in photorefractive crystals
Summary form only given. Photorefractive ferroelectrics have quite strong anisotropy of photocurrent. In barium titanate the typical ratio between conductivities in a- and c-directions is 14-20:1. In strontium barium niobate (SBN) this ratio is 1:3, ie. in this crystal the conductivity is higher along the c-axis, whereas in BaTiO/sub 3/ it is higher along the a-axis. Previous analysis of circular beam self-focusing (2D screening solitons) was not taking this factor into account. We demonstrate numerically that the existing anisotropy can dramatically affect the shape of self-focused beam.
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