Broadband near-infrared luminescence and energy transfer in Bi singly-doped and Bi/Yb co-doped titanate glasses

Han Tang; Hai-ping Xia

doi:10.1007/s11801-012-2315-5

Optoelectronics Letters ›› 2012, Vol. 8 ›› Issue (6) : 456-459. DOI: 10.1007/s11801-012-2315-5

Article

Broadband near-infrared luminescence and energy transfer in Bi singly-doped and Bi/Yb co-doped titanate glasses

Han Tang¹ ,
Hai-ping Xia¹^,^b

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Abstract

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.

Keywords

Energy Transfer Process / Germanate Glass / Titanate Glass / Dope Silicate Glass

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Han Tang, Hai-ping Xia. Broadband near-infrared luminescence and energy transfer in Bi singly-doped and Bi/Yb co-doped titanate glasses. Optoelectronics Letters, 2012, 8(6): 456‒459 https://doi.org/10.1007/s11801-012-2315-5

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This work has been supported by the National Natural Science Foundation of China (Nos.51272109 and 50972061), the Natural Science Foundation of Zhejiang Province (Nos. R4100364 and Z4110072), the Natural Science Foundation of Ningbo City in Zhejiang Province (No.2012A610115), and K. C. Wong Magna Fund in Ningbo University.