Frank R. Libsch, Takatoshi Tsujimura
Active Matrix Liquid Crystal Displays Technology and Applications 1997
We report the first observation of anticrossings in solid-state laser spectroscopy. Measurements are performed on the 6105- zero-phonon transition H43(Γ1) D21(Γ1) of Pr3+ in a YA103 crystal at 2°K where both ground- and excited-state anticrossings appear. A perturbation theory of the anticrossing signal is derived from the wave equations of motion for a three-level quantum system subject to a static interaction V between two neighboring levels (1 and 2) while a laser field resonantly excites the inhomogeneously broadened 23 transition. Ground- and excited-state gyromagnetic ratios γi(i=X,Y,Z) and the interactions V are obtained by fitting the observed anticrossings to a diagonalized hyperfine-spin Hamiltonian for Pr3+141 which includes second-order ligand field corrections in terms containing the electron orbital angular momentum. Under certain conditions, one anticrossing signal develops into a strongly modulated oscillation with a period of ∼ 20 G, an unexpected feature which appears to be a nonlinear optical coherence effect. The influence of anticrossing state mixing on optical free-induction-decay observations is also discussed. © 1981 The American Physical Society.
Frank R. Libsch, Takatoshi Tsujimura
Active Matrix Liquid Crystal Displays Technology and Applications 1997
Arvind Kumar, Jeffrey J. Welser, et al.
MRS Spring 2000
Michiel Sprik
Journal of Physics Condensed Matter
Eloisa Bentivegna
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