Picosecond excite-and-probe absorption measurement of the intra-2EgE3/2-state vibrational relaxation time in Ti3+:Al2O3

Gayen, S. K.; Wang, W. B.; Petricˇevic, V.; Yoo, K. M.; Alfano, R. R.
May 1987
Applied Physics Letters;5/25/1987, Vol. 50 Issue 21, p1494
Academic Journal
The kinetics of vibrational transitions in the 2EgE3/2 electronic state of Ti3+:Al2O3 is studied by exciting higher lying vibrational levels of the state by a 527-nm picosecond pump pulse, and monitoring the subsequent growth of population in the zero vibrational level and lower lying vibrational levels by a 3.9-μm picosecond probe pulse. An upper limit of 3.5 ps for intra-2EgE3/2 -state vibrational relaxation time is estimated.


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