Picosecond excite-and-probe absorption measurement of the 4T2 state nonradiative lifetime in ruby

Gayen, S. K.; Wang, W. B.; Petricˇevic, V.; Dorsinville, R.; Alfano, R. R.
September 1985
Applied Physics Letters;9/1/1985, Vol. 47 Issue 5, p455
Academic Journal
In a picosecond excite-and-probe absorption measurement, a 527-nm picosecond pulse excites the 4T2 state of the Cr3+ ion in ruby and a 3.4-μm picosecond probe pulse monitors the growth and decay of population in the 2E state as a function of pump-probe delay. From the growth of population in the metastable 2E state, an upper limit of 7 ps for the nonradiative lifetime of the 4T2 state is determined.


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