Spectroscopic properties of thulium ions in bismuth silicate glass
Chinese Optics Letters, Vol. 10, Issue 10, pp. 101601-101601 (2012)
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Abstract
A new type of bismuth silicate glass (Bi2O3-SiO2-ZnO-Al2O3-La2O3) doped with Tm2O3 is prepared by melt-quenching method. The thermal stability of the glass is examined by differential scanning calorimetry. No crystallization peak is found. Using the absorption and emission spectra, the absorption and emission cross-sections are calculated. Their maximum data are 2.9×10-21 cm2 at 1 663 nm and 4.7×10-21 cm2 at 1 826 nm, respectively. Using the Judd-Ofelt theory, the radiation transition probabilities and radiative lifetimes are obtained. The extended overlap integral method is applied to analyze energy transfer process among the Tm3+ ions. The transfer constants of cross-relaxation and energy migration among the Tm3+ ions at the 3H4 level are 7.60×10-40 and 14.98×10-40 cm6/s, respectively. The critical transfer radius for cross-relaxation is 0.99 nm. The cross relaxation process is easy to realize and is favorable for obtaining ~2-μm laser.
© 2012 Chinese Optics Letters
OCIS Codes
(160.2290) Materials : Fiber materials
(160.2750) Materials : Glass and other amorphous materials
(160.3380) Materials : Laser materials
(160.4670) Materials : Optical materials
(160.5690) Materials : Rare-earth-doped materials
ToC Category:
Materials
Citation
Xin Wang, Lili Hu, Kefeng Li, Ying Tian, and Sijun Fan, "Spectroscopic properties of thulium ions in bismuth silicate glass," Chin. Opt. Lett. 10, 101601-101601 (2012)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-10-10-101601
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