Journal of Materials Research

Rapid Communications

Effect of GeO2 additive on fluorescence intensity enhancement in bismuth-doped silica glass

Yasushi Fujimotoa1 c1, Yuki Hirataa2, Yoshiyuki Kuwadaa3, Takahiro Satoa3 and Masahiro Nakatsukaa3

a1 Institute of Laser Engineering, Osaka University, Suita, Osaka 565-0871, Japan

a2 Kinki University, School of Science and Engineering, Department of Electric and Electronic Engineering, Higashi-Osaka 577-8502, Japan

a3 Institute of Laser Engineering, Osaka University, Suita, Osaka 565-0871, Japan

Abstract

We observed the enhancement of fluorescence intensity due to the addition of GeO2 in bismuth-doped silica glass (BiSG), which has a peculiar fluorescence at 1.25 μm with a full width at half-maximum of 300 nm. Experimental results revealed that the fluorescence intensity from BiSG with 5.0 mol% GeO2 increased remarkably to be 26.3 times greater than that without GeO2 additive for the same Bi2O3 concentration (0.1 mol%). Furthermore, the enhanced sample showed almost the same intensity as BiSG without GeO2 for 1.0 mol% Bi2O3. These results demonstrate that GeO2 additive effectively promotes the generation of peculiar luminescent centers.

(Received September 27 2006)

(Accepted December 12 2006)

Key Words:

  • Bi;
  • Optical properties

Correspondence:

c1 Address all correspondence to this author. e-mail: fujimoto@ile.osaka-u.ac.jp

0Comments