A. S. Zolot’ko, I. A. Budagovsky, A. I. Baranov, V. V. Lagunov, M. P. Smayev, A. A. Kuznetsov, A. Yu. Bobrovsky
{"title":"无定形偶氮苯聚合物中的光束自作用","authors":"A. S. Zolot’ko, I. A. Budagovsky, A. I. Baranov, V. V. Lagunov, M. P. Smayev, A. A. Kuznetsov, A. Yu. Bobrovsky","doi":"10.3103/s1068335623602157","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">\n<b>Abstract</b>\n</h3><p>We report an experimental study of the self-action of TEM<sub>01</sub> and TEM<sub>00</sub> Gaussian modes in a layer of a comb-shaped amorphous polymer with cyanobiphenyl and azobenzene side fragments. For the linearly polarized TEM<sub>01</sub> mode, a pattern of aberration self-action is observed in the form of rings with an additional system of the fringes, caused by interference from two intensity peaks. The position of the fringes and the microscopic image of the deformation region correspond to the local nature of the nonlinear optical response. For the circularly polarized (with an ellipticity of about 7%) TEM<sub>00</sub> Gaussian mode, the polarization of the outer aberration ring is close to linear. This effect stems from the self-rotation of the polarization ellipse due to the manifestation of Kerr-type nonlinearity. A characteristic feature of this effect in an amorphous polymer is an increase in the eccentricity of the ellipse (transformation of circular polarization into linear polarization), which is caused by a light-induced change in the orientation distribution function of the chromophores.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":null,"pages":null},"PeriodicalIF":0.6000,"publicationDate":"2024-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Self-Action of Light Beams in an Amorphous Azobenzene Polymer\",\"authors\":\"A. S. Zolot’ko, I. A. Budagovsky, A. I. Baranov, V. V. Lagunov, M. P. Smayev, A. A. Kuznetsov, A. Yu. Bobrovsky\",\"doi\":\"10.3103/s1068335623602157\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3 data-test=\\\"abstract-sub-heading\\\">\\n<b>Abstract</b>\\n</h3><p>We report an experimental study of the self-action of TEM<sub>01</sub> and TEM<sub>00</sub> Gaussian modes in a layer of a comb-shaped amorphous polymer with cyanobiphenyl and azobenzene side fragments. For the linearly polarized TEM<sub>01</sub> mode, a pattern of aberration self-action is observed in the form of rings with an additional system of the fringes, caused by interference from two intensity peaks. The position of the fringes and the microscopic image of the deformation region correspond to the local nature of the nonlinear optical response. For the circularly polarized (with an ellipticity of about 7%) TEM<sub>00</sub> Gaussian mode, the polarization of the outer aberration ring is close to linear. This effect stems from the self-rotation of the polarization ellipse due to the manifestation of Kerr-type nonlinearity. A characteristic feature of this effect in an amorphous polymer is an increase in the eccentricity of the ellipse (transformation of circular polarization into linear polarization), which is caused by a light-induced change in the orientation distribution function of the chromophores.</p>\",\"PeriodicalId\":503,\"journal\":{\"name\":\"Bulletin of the Lebedev Physics Institute\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2024-04-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Bulletin of the Lebedev Physics Institute\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.3103/s1068335623602157\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"PHYSICS, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of the Lebedev Physics Institute","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.3103/s1068335623602157","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
Self-Action of Light Beams in an Amorphous Azobenzene Polymer
Abstract
We report an experimental study of the self-action of TEM01 and TEM00 Gaussian modes in a layer of a comb-shaped amorphous polymer with cyanobiphenyl and azobenzene side fragments. For the linearly polarized TEM01 mode, a pattern of aberration self-action is observed in the form of rings with an additional system of the fringes, caused by interference from two intensity peaks. The position of the fringes and the microscopic image of the deformation region correspond to the local nature of the nonlinear optical response. For the circularly polarized (with an ellipticity of about 7%) TEM00 Gaussian mode, the polarization of the outer aberration ring is close to linear. This effect stems from the self-rotation of the polarization ellipse due to the manifestation of Kerr-type nonlinearity. A characteristic feature of this effect in an amorphous polymer is an increase in the eccentricity of the ellipse (transformation of circular polarization into linear polarization), which is caused by a light-induced change in the orientation distribution function of the chromophores.
期刊介绍:
Bulletin of the Lebedev Physics Institute is an international peer reviewed journal that publishes results of new original experimental and theoretical studies on all topics of physics: theoretical physics; atomic and molecular physics; nuclear physics; optics; lasers; condensed matter; physics of solids; biophysics, and others.