6 . 6 Parametric generation of forward and phase - conjugated spin - wave bul - lets in a magnetic film
نویسنده
چکیده
Although predicted for light [1], wave bullets − stable two-dimensional nonlinear wave packets self-focused in space and time − were first experimentally observed in the system of spin waves in yttrium-iron garnet (YIG) films [2]. The experimental investigation of wave bullets in magnetic films has the advantage of direct two-dimensional access to the medium and of the possibility to follow the bullet formation and propagation in real time due to its relatively low speed (compared to the speed of light) using the spaceand time-resolved Brillouin light scattering technique [3]. An additional advantage is the fact that in garnet films it is possible to realize an effective parametric interaction of a propagating spin-wave packet with non-stationary (pulsed) electromagnetic pumping [4].
منابع مشابه
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