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Telecommunications and Radio Engineering
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN Imprimer: 0040-2508
ISSN En ligne: 1943-6009

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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v64.i9.40
pages 735-757

Bistability and Transient Processes in a Three-Level Phaser System Saturated by a Standing Pumping Field and a Signal Traveling Wave

D. N. Makovetskii
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine

RÉSUMÉ

Nonstationary processes in a three-level active paramagnetic phaser system have been investigated in case of the inversion state branching (bistability) which takes place below the threshold of self-excitation of the phonon generation. It has been shown that the nature of the branching of inversion states and transient processes in such a system depends significantly not only on a hypersound signal intensity, that was determined before, but also on a signal modulation frequency. Narrow nonlinear resonances and a critical slowing-down of transient processes have been found at simultaneous saturation of a spin-system by a standing electromagnetic pumping field and a hypersound-signal traveling wave.


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