Title :
Parametric interaction of a spin wave pulse with localized nonstationary pumping: amplification and phase conjugation
Author :
Melkov, G.A. ; Serga, A.A. ; Tiberkevich, V.S. ; Oliynyk, A.N. ; Bagada, A.V. ; Slavin, A.N.
Author_Institution :
Radiophys. Fac., Taras Shevchenko Kiev Univ., Ukraine
fDate :
9/1/1999 12:00:00 AM
Abstract :
Parametric interaction of a dipolar spin wave pulse with electromagnetic field of a localized nonstationary (pulsed) pumping is studied experimentally and theoretically in yttrium-iron garnet (YIG) films. This interaction leads to the effective amplification of the incident BVMSW pulse, and also to the formation of a phase-conjugated and amplified pulse propagating in the reverse direction. Numerical calculation of amplification and conjugation coefficients are in good quantitative agreement with experiment
Keywords :
garnets; magnetic thin films; magnetostatic waves; microwave parametric amplifiers; spin waves; yttrium compounds; YFe5O12; YIG; amplified pulse; conjugation coefficients; dipolar spin wave pulse; electromagnetic field; incident BVMSW pulse; localized nonstationary pumping; parametric interaction; phase conjugation; phase-conjugated pulse; EMP radiation effects; Electromagnetic fields; Electromagnetic propagation; Garnet films; Magnetostatic waves; Optical films; Physics; Pulse amplifiers; Signal processing; Space vector pulse width modulation;
Journal_Title :
Magnetics, IEEE Transactions on
