Advanced bismuth-doped lead-germanate glass for
broadband optical gain devices

Hughes, MA; Suzuki, T; Ohishi, Y

Abstract

We fabricated a series of glasses with the composition 94.7- ͓GeO2-5Al2O3-0.3Bi2O3-͓PbO ( ͓ = 0–24 mol. %)
Characteristic absorption bands of bismuth centered at 500, 700, 800, and 1000 nm were observed. Adding PbO
was found to decrease the strength of bismuth absorption. The addition of 3%–4% PbO resulted in a 50% increase
in lifetime, a 20-fold increase in quantum efficiency, and a 28-fold increase in the product of emission
cross section and lifetime on the 0% PbO composition. We propose that the 800 nm absorption band relates a
different bismuth center than the other absorption bands.

Citation

broadband optical gain devices. Journal of the Optical Society of America B, 25(8), 1380-1386. https://doi.org/10.1364/JOSAB.25.001380

• Journal Article Type: Article
• Acceptance Date: Jun 15, 2008
• Publication Date: Jul 30, 2008
• Deposit Date: Nov 9, 2015
• Journal: Journal of the Optical Society of America B: Optical Physics (JOSA B)
• Print ISSN: 0740-3224
• Publisher: Optical Society of America
• Volume: 25
• Issue: 8
• Pages: 1380-1386
• DOI: https://doi.org/10.1364/JOSAB.25.001380
• Publisher URL: http://dx.doi.org/10.1364/JOSAB.25.001380
• Related Public URLs: https://www.osapublishing.org/josab/home.cfm
• Additional Information: Funders : MEXT