Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5404372 | Journal of Luminescence | 2006 | 7 Pages |
Abstract
We present direct measurements of the lifetime of the 4F5/2 and 2H(2)9/2 manifold in Nd3+:YLiF4, using a fluorescence pump-probe technique. The technique populates the 4F5/2 and 2H(2)9/2 manifold directly with a pump pulse. Via excited state absorption from this excited manifold, the 2F(2)5/2 manifold of Nd3+ is populated with a delayed probe pulse. The population in the 4F5/2 and 2H(2)9/2 manifold is monitored as a function of time by observing the change in integrated UV fluorescence from the 2F(2)5/2 manifold for each time delay between pump and probe pulses. The pump (â¼780nm) and probe (â¼390nm) beams come from the fundamental and second harmonic wavelengths of a femtosecond Ti:sapphire regenerative amplifier. The measured lifetime (230±30ps) agrees well with the energy gap law, based on other nonradiative lifetime measurements from the literature for Nd3+:YLiF4.
Keywords
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
B.M. van der Ende, R.L. Brooks, H.F. Tiedje, Hong Sun, H.K. Haugen,