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

Hughes, MA ORCID: https://orcid.org/0000-0002-0877-5279, Suzuki, T and Ohishi, Y 2008, 'Advanced bismuth-doped lead-germanate glass for broadband optical gain devices' , Journal of the Optical Society of America B: Optical Physics (JOSA B), 25 (8) , pp. 1380-1386.

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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.

Item Type:	Article
Schools:	Schools > School of Computing, Science and Engineering
Journal or Publication Title:	Journal of the Optical Society of America B: Optical Physics (JOSA B)
Publisher:	Optical Society of America
ISSN:	0740-3224
Related URLs:	Publication
Funders:	MEXT
Depositing User:	Dr Mark Hughes
Date Deposited:	09 Nov 2015 12:05
Last Modified:	16 Feb 2019 21:54
URI:	http://usir.salford.ac.uk/id/eprint/36951

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