Excited-state dynamics in the low-phonon materials Er3+:BaY2F8 and Cs3Er2Br9

Pollnau, M. and Lüthy, W. and Weber, H.P. and Krämer, K. and Güdel, H.U. and McFarlane, R.A. (1996) Excited-state dynamics in the low-phonon materials Er3+:BaY2F8 and Cs3Er2Br9. In: Advanced Solid State Lasers, 31 January - 2 February 1996, San Francisco, CA.

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Abstract:	By measuring ground-state absorption (GSA), fluorescence, and excited-state absorption (ESA) at the wavelength region around 550nm the population dynamics in Er3+:BaY2F8 and Cs3Er2Br9 are investigated. The excitation dynamics of Er3+:BaY2F8 are comparable with those in other fluoride or oxide materials. In Cs3Er2Br9 the smaller Stark splitting of the levels shifts the wavelengths of the green emission and parasitic ESA off resonance. It enhances, however, ground-state reabsorption. Upconversion leads to sigruficant green fluorescence from the 2H9/2 level. Multiphonon transitions do not contribute to the population dynamics in Cs3Er2Br9.
Item Type:	Conference or Workshop Item
Copyright:	© 1996 Optical Society of America
Link to this item:	http://purl.utwente.nl/publications/71679
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