Use of stimulated emission to measure R-line shifts in shocked ruby crystals

Knudson, M. D.; Gupta, Y. M.
April 2000
AIP Conference Proceedings;2000, Vol. 505 Issue 1, p963
Academic Journal
In previous studies, ruby R-line shifts under shock compression and tension have been measured using the spontaneous luminescence from optically pumped samples. Signal intensities obtained through the use of this method are limited by the short time duration of the experiments (100 ns to several μs) in comparison to the long lifetime of the luminescence (approximately 3 ms). We have investigated the use of stimulated emission as a technique for measuring R-line shifts in shocked ruby crystals. Feasibility experiments were performed both at ambient conditions and under shock compression to 60 kbar using an experimental configuration similar to that used for time resolved ruby luminescence measurements in previous shock wave studies. Signal gain due to stimulated emission was observed, with gains ranging from 1.1 to 3.4, in agreement with calculations performed for the particular experimental configuration used. The present results make a good case for incorporating this technique to measure shock induced R-line shifts in ruby. Work supported by DSWA.


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