Optical spectroscopy of Cr3+ and Cr3+-Tm3+ in alkaline silicate glasses |
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Authors: | U R Rodrigues-Mendoza V D Rodrigues V Lavin I R Martin P Nunez |
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Institution: | (1) Dpto. de Fisica Fundamental y Experimental, Universidad de La Laguna, 38206 La Laguna, Tenerife, Spain;(2) Dpto. Quimica Inorganica, Universidad de La Laguna, 38206 La Laguna, Tenerife, Spain |
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Abstract: | Conclusions Alkaline silicate glasses seem to be good candidates as host materials for codoping with Cr3+ and Tm3+. Cr3+ ions occupy mainly low-field sites in them, and their broadband emission overlaps Tm3+ excitation. As a consequence very high efficiency for the energy transfer Cr3+→Tm3+ is achieved with moderate concentrations of these ions. Moreover, the average lifetime of the Cr3+ ions in codoped glasses is long enough to allow significant energy storage by flashlamp pumping.
Published in Zhurnal Prikladnoi Spektroskopii, Vol. 62, No. 5, pp. 115–120, September–October, 1995. |
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