Advanced bismuth-doped lead-germanate glass for broadband optical gain devices
Journal Article
·
· Journal of the Optical Society of America. Part B, Optical Physics
- Toyota Technological Institute, 2-12, Hisakata, Tempaku, Nagoya 468-8511 (Japan)
We fabricated a series of glasses with the composition 94.7-{chi}GeO{sub 2}-5Al{sub 2}O{sub 3}-0.3Bi{sub 2}O{sub 3}-{chi}PbO ({chi}=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.
- OSTI ID:
- 21100350
- Journal Information:
- Journal of the Optical Society of America. Part B, Optical Physics, Vol. 25, Issue 8; Other Information: DOI: 10.1364/JOSAB.25.001380; (c) 2008 Optical Society of America; Country of input: International Atomic Energy Agency (IAEA); ISSN 0740-3224
- Country of Publication:
- United States
- Language:
- English
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