Compositional dependence of the optical properties of bismuth doped lead-aluminum-germanate glass

Hughes, MA; Suzuki, T; Ohishi, Y

Abstract

We report the compositional dependence of absorption, emission, decay constant and quantum efficiency
(QE) of GeO2:Al2O3:PbO:Bi2O3 glass with the aim of finding the composition most suitable for a laser gain
medium. As the Bi2O3 content was varied we observed a non-monotonic variation in absorption spectrum.
The optimized composition was 87.4GeO2:6Al2O3:6PbO:0.6Bi2O3 (% molar) which had a QE of
67% but low transparency. We report the dependence of QE and decay constant on melting conditions
of this glass. Adding 10% ZnO improved the transparency, therefore the optimized and transparent composition
was 74.4GeO2:10ZnO:6Al2O3:6PbO:0.6Bi2O3, which had an emission full width at half maximum
of 500 nm.

Citation

Hughes, M., Suzuki, T., & Ohishi, Y. (in press). Compositional dependence of the optical properties of bismuth doped lead-aluminum-germanate glass. Optical Materials, 32(9), 1028-1034. https://doi.org/10.1016/j.optmat.2010.02.025

• Journal Article Type: Article
• Acceptance Date: Feb 12, 2010
• Deposit Date: Nov 10, 2015
• Journal: Optical Materials
• Print ISSN: 0925-3467
• Electronic ISSN: 1873-1252
• Publisher: Elsevier
• Volume: 32
• Issue: 9
• Pages: 1028-1034
• DOI: https://doi.org/10.1016/j.optmat.2010.02.025
• Publisher URL: http://dx.doi.org/10.1016/j.optmat.2010.02.025
• Related Public URLs: http://www.journals.elsevier.com/optical-materials/
• Additional Information: Funders : MEXT