Spectroscopic properties of Nd{sup 3+} and Pr{sup 3+} in gallate glasses with low phonon energies
- Department of Materials Science and Technology, Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasuga-kouen, Kasuga, Fukuoka 816 (Japan)
- Optoelectronics Research Centre, University of Southampton, Highfield, Southampton SO17 1BJ (United Kingdom)
Absorption and fluorescence spectra of Nd{sup 3+} were measured in potassium tantalum gallate, lead bismuth gallate (PBG), fluorozirconate (ZBLAN), and Ge{endash}Ga{endash}S glasses. A Judd{endash}Ofelt analysis was performed to determine the spontaneous emission probability and stimulated emission cross section of the {sup 4}F{sub 3/2}{r_arrow}{sup 4}I{sub 11/2} transition of Nd{sup 3+}. Raman spectra were studied to clarify the maximum phonon energies of the glasses. The fluorescence of the {sup 1}G{sub 4}{r_arrow}{sup 3}H{sub 5} transition of Pr{sup 3+} in a dehydrated PBG glass was observed for the first time to our knowledge. The PBG glass has a higher quantum efficiency than that of ZBLAN glass based on the Judd{endash}Ofelt analysis. {copyright} 1997 Optical Society of America
- OSTI ID:
- 365347
- Journal Information:
- Applied Optics, Journal Name: Applied Optics Journal Issue: 24 Vol. 36; ISSN APOPAI; ISSN 0003-6935
- Country of Publication:
- United States
- Language:
- English
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