{"title":"具有长光导弛豫时间的晶体中的非稳态光电动势","authors":"I. Sokolov, S. Stepanov","doi":"10.1364/pmed.1991.tuc6","DOIUrl":null,"url":null,"abstract":"The recently discovered effect of non-steady-state photo(EMF) is a powerful technique for the measurement of different parameters of photorefractive crystals [1-3]. The photoEMF is observed as an alternating electric current Jω through a short-circuited sample of photoconductor illuminated by a vibrating pattern of interference between two coherent waves, one of which is phase modulated with frequency ω (Fig. 1). It results from a periodic modulation of the spatial shift between the distribution of photoconductivity that followes movements of the interference pattern and the distribution of the space-charge electric field recordered through the conventional diffusion holographic mechanism in photorefractive crystals.","PeriodicalId":355924,"journal":{"name":"Photorefractive Materials, Effects, and Devices","volume":"24 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1992-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Non-steady-state photoEMF in crystals with long relaxation times of photoconductivity\",\"authors\":\"I. Sokolov, S. Stepanov\",\"doi\":\"10.1364/pmed.1991.tuc6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The recently discovered effect of non-steady-state photo(EMF) is a powerful technique for the measurement of different parameters of photorefractive crystals [1-3]. The photoEMF is observed as an alternating electric current Jω through a short-circuited sample of photoconductor illuminated by a vibrating pattern of interference between two coherent waves, one of which is phase modulated with frequency ω (Fig. 1). It results from a periodic modulation of the spatial shift between the distribution of photoconductivity that followes movements of the interference pattern and the distribution of the space-charge electric field recordered through the conventional diffusion holographic mechanism in photorefractive crystals.\",\"PeriodicalId\":355924,\"journal\":{\"name\":\"Photorefractive Materials, Effects, and Devices\",\"volume\":\"24 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1992-05-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Photorefractive Materials, Effects, and Devices\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1364/pmed.1991.tuc6\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Photorefractive Materials, Effects, and Devices","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1364/pmed.1991.tuc6","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Non-steady-state photoEMF in crystals with long relaxation times of photoconductivity
The recently discovered effect of non-steady-state photo(EMF) is a powerful technique for the measurement of different parameters of photorefractive crystals [1-3]. The photoEMF is observed as an alternating electric current Jω through a short-circuited sample of photoconductor illuminated by a vibrating pattern of interference between two coherent waves, one of which is phase modulated with frequency ω (Fig. 1). It results from a periodic modulation of the spatial shift between the distribution of photoconductivity that followes movements of the interference pattern and the distribution of the space-charge electric field recordered through the conventional diffusion holographic mechanism in photorefractive crystals.
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