掺铒铋酸盐（Bi2O3-GeO2-Ga2O3-Na2O）玻璃中 2.7µm 强发射及结构起源。

Intense 2.7 µm emission and structural origin in Er3+-doped bismuthate (Bi2O3-GeO2-Ga2O3-Na2O) glass.

机构信息

Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China.

出版信息

Opt Lett. 2012 Jan 15;37(2):268-70. doi: 10.1364/OL.37.000268.

DOI:10.1364/OL.37.000268

PMID:22854489

Abstract

The 2.7 μm emission properties in Er3+-doped bismuthate (Bi2O3-GeO2-Ga2O3-Na2O) glass were investigated in the present Letter. An intense 2.7 μm emission in Er3+-doped bismuthate glass was observed. It is found that Er3+-doped bismuthate glass possesses high spontaneous transition probability A (65.26 s(-1)) and large 2.7 μm emission cross section σ(em) (9.53×10(-21) cm2) corresponding to the stimulated emission of Er3+:4I11/2→4I13/2 transition. The emission characteristic and energy transfer process upon excitation of a conventional 980 nm laser diode in bismuthate glass were analyzed. Additionally, the structure of bismuthate glass was analyzed by the Raman spectrum. The advantageous spectroscopic characteristics of Er3+ single-doped bismuthate glass together with the prominent thermal property indicate that bismuthate glass might become an attractive host for developing solid-state lasers around 2.7 μm.

摘要

本研究报道了掺铒铋酸盐（Bi2O3-GeO2-Ga2O3-Na2O）玻璃中 2.7μm 发射特性。观察到掺铒铋酸盐玻璃中存在强 2.7μm 发射。研究发现，掺铒铋酸盐玻璃具有较高的自发跃迁概率 A（65.26 s(-1)) 和较大的 2.7μm 发射截面 σ(em)（9.53×10(-21) cm2），对应于 Er3+：4I11/2→4I13/2 跃迁的受激发射。分析了在常规 980nm 激光二极管激发下铋酸盐玻璃中的发射特性和能量传递过程。此外，还通过拉曼光谱分析了铋酸盐玻璃的结构。掺铒铋酸盐玻璃具有优越的光谱特性和显著的热性能，这表明铋酸盐玻璃可能成为开发 2.7μm 附近固态激光器的有吸引力的基质。