We report on broadband infrared emission of bismuth-doped RO-B_2O_3(R=Ca,Sr,Ba) glasses. Glass samples are prepared under various conditions by a conventional melting-quenching method and the luminescence properties i...We report on broadband infrared emission of bismuth-doped RO-B_2O_3(R=Ca,Sr,Ba) glasses. Glass samples are prepared under various conditions by a conventional melting-quenching method and the luminescence properties in infrared wavelength region are investigated,No apparent infrared luminescence is observed in the SrO-B_2O_3 and BaO-B_2O_3 prepared in air,while glasses prepared in reducing atmosphere exhibit a broadband infrared luminescence peaking at 1300 nm with a full width at half maximum(FWHM) of about 200 nm when excited by an 800 nm laser diode.A mechanism was proposed to explain the observed phenomena. The presence of low valence bismuth,probably Bi^+,is responsible for the broadband infrared emission.展开更多
基金Supported by the National Natural Science Foundation of China (No.50672087 and No.60778039)National Basic Research Program of China (No.2006CB806000)+1 种基金National High Technology Program of China (No.2006AA03Z304)supported by Program for Changjiang Scholars and Innovative Research Team in University
文摘We report on broadband infrared emission of bismuth-doped RO-B_2O_3(R=Ca,Sr,Ba) glasses. Glass samples are prepared under various conditions by a conventional melting-quenching method and the luminescence properties in infrared wavelength region are investigated,No apparent infrared luminescence is observed in the SrO-B_2O_3 and BaO-B_2O_3 prepared in air,while glasses prepared in reducing atmosphere exhibit a broadband infrared luminescence peaking at 1300 nm with a full width at half maximum(FWHM) of about 200 nm when excited by an 800 nm laser diode.A mechanism was proposed to explain the observed phenomena. The presence of low valence bismuth,probably Bi^+,is responsible for the broadband infrared emission.
