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

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

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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