Broadband near-infrared luminescence and energy trans-fer in Bi singly-doped and Bi/Yb co-doped tita

来源 :Optoelectronics Letters | 被引量 : 0次 | 上传用户:Baoji8
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Super-broadband near-infrared(NIR)emission from 1100 nm to 1600 nm is observed in Bi-doped titanate glasses at the excitation of 808 nm laser diode(LD).The effects of Bi content on the optical spectra are investigated.It is also found that the Bi-related emission intensity can be enhanced by Yb3+co-doping at the excitation of 980 nm LD.It should be ascribed to the energy transfer from Yb3+to active Bi ions.The energy transfer processes are studied based on the Inokuti-Hirayama(I-H)model,and the energy transfer of electric dipole-dipole interaction is confirmed to be dominant in Bi/Yb co-doped glasses. Super-broadband near-infrared (NIR) emission from 1100 nm to 1600 nm is observed in Bi-doped titanate glasses at the excitation of 808 nm laser diode (LD). The effects of Bi content on the optical spectra are investigated. It is also found that the Bi-related emission intensity can be enhanced by Yb3 + co-doping at the excitation of 980 nm LD.It should be ascribed to the energy transfer from Yb3 + to active Bi ions. The energy transfer processes are studied based on the Inokuti-Hirayama (IH) model, and the energy transfer of electric dipole-dipole interactions is confirmed to be dominant in Bi / Yb co-doped glasses.
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