{"title":"Laser Mapping of Al-h+ Impurity Distribution in Vacuum Swept Crystalline Quartz","authors":"J. Anthes, P. Garcia, D. Koehler","doi":"10.1364/lmd.1987.wb3","DOIUrl":null,"url":null,"abstract":"We have used HeNe laser light absorption to perform 2-D spatial mapping of hole-compensated aluminum (Al-h+) impurity sites produced during vacuum sweeping of crystalline quartz. Application of an electric field parallel to the optic axis can produce a hole(1) trapped at a non-bonding oxygen ion (AlO4)° site. These hole-compensated Al-h+ sites introduce color center absorption. The electro-diffusion process (sweeping) is performed under elevated temperature and vacuum conditions. The diffusion process produces a time-dependent spatial distribution of the Al-h+ centers and associated A1-band optical absorption which is coincident with the 633-nm-HeNe laser wavelength. Spatial variations in the A1-band absorption for swept quartz and for quartz subjected to ionizing radiation are correlated with the observed(1) coloration. Devices fabricated from crystalline quartz with hole-compensated aluminum impurity sites are resistant to the effects of ionizing radiation. The 2-D mapping of optical absorption is compared to electron spin resonance (ESR) measurements of aluminum impurity concentration in samples of vacuum swept cultured quartz.","PeriodicalId":331014,"journal":{"name":"Topical Meeting on Lasers in Materials Diagnostics","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Topical Meeting on Lasers in Materials Diagnostics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1364/lmd.1987.wb3","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
We have used HeNe laser light absorption to perform 2-D spatial mapping of hole-compensated aluminum (Al-h+) impurity sites produced during vacuum sweeping of crystalline quartz. Application of an electric field parallel to the optic axis can produce a hole(1) trapped at a non-bonding oxygen ion (AlO4)° site. These hole-compensated Al-h+ sites introduce color center absorption. The electro-diffusion process (sweeping) is performed under elevated temperature and vacuum conditions. The diffusion process produces a time-dependent spatial distribution of the Al-h+ centers and associated A1-band optical absorption which is coincident with the 633-nm-HeNe laser wavelength. Spatial variations in the A1-band absorption for swept quartz and for quartz subjected to ionizing radiation are correlated with the observed(1) coloration. Devices fabricated from crystalline quartz with hole-compensated aluminum impurity sites are resistant to the effects of ionizing radiation. The 2-D mapping of optical absorption is compared to electron spin resonance (ESR) measurements of aluminum impurity concentration in samples of vacuum swept cultured quartz.