Broadband infrared luminescence in γ-ray irradiated bismuth borosilicate glasses

Abstract

The influence of γ-ray irradiation on the optical properties of Bi(2)O(3)-B(2)O(3)-SiO(2) glass has been investigated. Broadband infrared (IR) emission at 1310 nm with a FWHM over 200 nm is observed in the γ-ray irradiated glass. The IR luminescence depends on the γ-ray irradiation dose and the concentration of Bi(2)O(3). The thermal stability of the γ-ray irradiated IR luminescence center is studied, and the origin of the IR luminescence center has been suggested.

New strategy to enhance the broadband near‐infrared emission of bismuth‐doped laser glasses

“…We believe, in this Bi‐doped silicate glasses, broadband NIR emission stems from Bi + (~1165 nm) and Bi 0 (~1250 nm). In addition, we also noticed that excess addition of Si 3 N 4 will decreases the Bi NIR emission and results in black color of sample, which indicates that there are metallic Bi . The great changes in the emission spectra and absorption spectra should be originated from the conversion of high valence Bi ions into Bi + , Bi 0 and Bi metal particle.…”

“…How to improve the performance of Bi‐doped glasses and fibers is of great significance for promoting the development of Bi‐doped fiber and fiber lasers toward highly efficient fiber amplifiers and tunable lasers operating in the whole NIR region . At present, several meaningful strategies have been investigated to generate Bi active centers and enhance the NIR emission of Bi‐doped optical functional glasses and fibers, such as modifying glass structure or optical basicity, employing reduction gas and high‐energy radiation . However, there are several restrictions for the applications of these proposed methods to enhance the NIR emission of Bi‐based luminescent materials.…”

Ce3+/Yb3+/Er3+ triply doped bismuth borosilicate glass: a potential fiber material for broadband near-infrared fiber amplifiers

“…The strongest peak (130 cm −1 ) attributes to the vibrational mode of Bi 3+ in [BiO 6 ] octahedron. The 367 cm −1 peak is caused by the distorted vibration of Bi-O-Bi and Si-O-Si in [BiO 6 ] and [SiO 4 ]23. The 721 cm −1 band is due to the distorted vibration of B-O-B in [BO 3 ] and [BO 4 ]24.…”

Influence of Gamma-ray irradiation on the spectral properties of Bi-doped silica fibers

“…The effects of irradiation on the fluorescence properties of the Bi-doped silica optical fibers have been studied [16][17][18]. The intensity of infrared (IR) fluorescence was enhanced by UV-irradiation, which was attributed to an increase of the concentration of bismuth active centers [16,17].…”

“…The intensity of infrared (IR) fluorescence was enhanced by UV-irradiation, which was attributed to an increase of the concentration of bismuth active centers [16,17]. And W. Shen group [18] used Gamma-ray irradiation to exposure bismuth borosilicate glasses and obtained an enhancement of the IR fluorescence. They guessed that the low-valent-states bismuth ions may be at the origin of the IR fluorescence in bismuth activated materials.…”