We report on broadband infrared emission of bismuth-doped RO-B2O3（R=Ca, Sr, Ba） glasses. Glass samples are prepared under various conditions by a conventional melting-quenching method and the luminescence properties...We report on broadband infrared emission of bismuth-doped RO-B2O3（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-B2O3 and BaO-B2O3 prepared in air, while glasses prepared in reducing atmosphere exhibit a broadband infrared luminescence peaking at 1 300 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-B2O3（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-B2O3 and BaO-B2O3 prepared in air, while glasses prepared in reducing atmosphere exhibit a broadband infrared luminescence peaking at 1 300 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.
