Nonlinear effects of resonance transparency for two-frequency acoustic pulses in a paramagnetic crystal |
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Authors: | S. V. Sazonov |
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Affiliation: | (1) Kaliningrad State University, ul. Nevskogo 14, Kaliningrad, 236041, Russia |
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Abstract: | Two modes of nonlinear propagation of two-frequency acoustic pulses in a low-temperature crystal containing paramagnetic resonance impurities with an effective spin S = 1 in an external magnetic field and a field of the static strain are considered. It is shown that the spin-phonon transitions occurring within spin triplets according to the V scheme are responsible for two-frequency self-induced acoustic transparency. When the spin-phonon transitions follow the Λ scheme, there can arise an acoustic effect similar to electromagnetically induced transparency in a pulsed mode, which is accompanied by trapping of the population of the spin sublevels. |
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