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Time-resolved excited-state electronic Raman spectrum of ruby

✍ Scribed by P. Myslinski; J.A. Koningstein

Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
299 KB
Volume
135
Category
Article
ISSN
0009-2614

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✦ Synopsis

Raman scattering transitions between the excited states 8( 'E) and 2A(rE) of Cr3+ in A1203 are studied. The new technique for population decay measurements of the excited states uses a pulsed tunable dye laser as an optical pump and a cw laser as a Raman probe, plus a gated detection system. The population decay of the optically prepared states, under conditions of illumination required to record the excited state electronic Raman shift at 29 cm-' of the ruby crystal, is faster than 20 ns. This is at least three orders of magnitude smaller than the radiative decay time of R,,r fluorescence of ruby for small signal intensity excitation.

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