B. Spinger, V. P. Danilov, A. Prokhorov, L. Schwan, D. Schmid
{"title":"共掺铒和镱离子的钇-氟化锂晶体的上转换过程","authors":"B. Spinger, V. P. Danilov, A. Prokhorov, L. Schwan, D. Schmid","doi":"10.1117/12.475334","DOIUrl":null,"url":null,"abstract":"We report on studies of the up-conversion process in YLiF4 single crystals co-doped with Er3+ and with Yb3+. Er3+ has a well known complicated energy level system within the 4f shell which gives rise to the up- conversion process. Yb3+ with a broad absorption band int eh regime 940 nm <EQ (lambda) <EQ 1000 nm essentially represents a two level system which absorbs IR light. It can transfer the absorbed energy resonantly to the Er3+ system thereby increasing the quantum efficiency of the up- conversion process considerably. We have performed steady state and time-resolved measurements of emission and absorption spectra as well as luminescence excitation spectra following either excitation with a light emitting diode, a laser diode or a pulsed dye laser. We have tried to trace some of the channels for energy transfer, relaxation and up-conversion and to optimize the system for an optimum up-conversion efficiency. At optimum conditions we can estimate quantum yields for up-conversion of RI to green light in the order of about 2.5 to 3 percent. Three-step up- conversion to UV emission is also observed. These observation suggest that YliF4 single crystal co-doped with Er3+ and with Yb3+ may be considered as suitable candidates for diode-laser-pumped displays and for solid state laser system int eh visible and near UV region.","PeriodicalId":312884,"journal":{"name":"Feofilov Symposium on Spectropscopy of Crystals Activated by Rare-Earth and Transition Metal Ions","volume":"67 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2002-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Up conversion processes in yttrium-lithium-flouride crystals co-doped with erbium and ytterbium ions\",\"authors\":\"B. Spinger, V. P. Danilov, A. Prokhorov, L. Schwan, D. Schmid\",\"doi\":\"10.1117/12.475334\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We report on studies of the up-conversion process in YLiF4 single crystals co-doped with Er3+ and with Yb3+. Er3+ has a well known complicated energy level system within the 4f shell which gives rise to the up- conversion process. Yb3+ with a broad absorption band int eh regime 940 nm <EQ (lambda) <EQ 1000 nm essentially represents a two level system which absorbs IR light. It can transfer the absorbed energy resonantly to the Er3+ system thereby increasing the quantum efficiency of the up- conversion process considerably. We have performed steady state and time-resolved measurements of emission and absorption spectra as well as luminescence excitation spectra following either excitation with a light emitting diode, a laser diode or a pulsed dye laser. We have tried to trace some of the channels for energy transfer, relaxation and up-conversion and to optimize the system for an optimum up-conversion efficiency. At optimum conditions we can estimate quantum yields for up-conversion of RI to green light in the order of about 2.5 to 3 percent. Three-step up- conversion to UV emission is also observed. These observation suggest that YliF4 single crystal co-doped with Er3+ and with Yb3+ may be considered as suitable candidates for diode-laser-pumped displays and for solid state laser system int eh visible and near UV region.\",\"PeriodicalId\":312884,\"journal\":{\"name\":\"Feofilov Symposium on Spectropscopy of Crystals Activated by Rare-Earth and Transition Metal Ions\",\"volume\":\"67 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2002-07-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Feofilov Symposium on Spectropscopy of Crystals Activated by Rare-Earth and Transition Metal Ions\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1117/12.475334\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Feofilov Symposium on Spectropscopy of Crystals Activated by Rare-Earth and Transition Metal Ions","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1117/12.475334","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Up conversion processes in yttrium-lithium-flouride crystals co-doped with erbium and ytterbium ions
We report on studies of the up-conversion process in YLiF4 single crystals co-doped with Er3+ and with Yb3+. Er3+ has a well known complicated energy level system within the 4f shell which gives rise to the up- conversion process. Yb3+ with a broad absorption band int eh regime 940 nm
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