Multiphoton absorption by Fermi systems with pulsed and continuous pumping
L. I. GlazmanA. M. Gor’kii State University, Khar’kov and Physicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kovV. M. TsukernikA. M. Gor’kii State University, Khar’kov and Physicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kov
ABI
Аннотация
The magnitude of the absorption of a strong alternating field interacting parametrically with a system of Fermi particles is calculated. The cases of pulsed action of the field on the system and continuous pumping, establishing a state of saturation, are examined. The equations obtained are applied to the problem of longitudinal pumping in a one-dimensional XY spin model and to the theory of interband absorption of a strong electromagnetic wave.
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