1. Transient spectral hole-burning studies of the R2 line in ruby
- Author
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Nathan Schubert, Alex Szabo, Hans Riesen, Nicolas Riesen, Riesen, Hans, Riesen, Nicolas, Schubert, Nathan, and Szabo, Alex
- Subjects
spectral-hole burning ,Chemistry, Physical ,Chemistry ,Physics ,Analytical chemistry ,General Physics and Astronomy ,Physics, Atomic, Molecular & Chemical ,Laser ,higher temperatures ,law.invention ,symbols.namesake ,law ,Homogeneous ,Spectral hole burning ,symbols ,Relaxation (physics) ,Transient (oscillation) ,Physical and Theoretical Chemistry ,Atomic physics ,Excitation ,Raman scattering ,Line (formation) - Abstract
We report transient spectral hole-burning studies of the R-2(+/- 1/2) line in 130, 20 ppm and 0.6 ppm ruby between 2.4 and 70 K. The homogeneous line width Gamma(h) is found to be 142 +/- 6 MHz at 2.4 K for both 20 and 130 ppm crystals; this value is in agreement with the T-1 value of 1.1 ns (Gamma(h) = 1/2 pi T-1 = 140 MHz) for the 2 (A) over bar state obtained by Rives and Meltzer who used pulsed, non-selective laser excitation. The line width is dominated by a direct one-phonon relaxation process 2 (A) over bar -> (E) over bar up to 50 K whereas at higher temperatures two-phonon Raman scattering becomes dominant. Cross-relaxation and spin-lattice relaxation times significantly affect pseudo-CW experiments. Refereed/Peer-reviewed
- Published
- 2009
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