Abstract
Abstract : The report describes in detail the technical progress made in studies of strong infrared light scattering from coherent spin waves during the second six months of a three year interdisciplinary research program. Coherent light scattering from coherent microwave spin waves in yttrium iron garnet (YIG) is studied theoretically and experimentally. The method is then used, in conjunction with standard microwave techniques, to probe the propagation of spin waves and magnetoelastic waves, in spatially-and/or-temporally-varying magnetic fields. The dispersion of magnetoelastic waves propagating parallel to saturation magnetization when the latter is in an arbitrary crystallographic direction, first presented by Morgenthaler, is rederived. The report discusses the first direct observation of strong Bragg Scattered infrared light (1150 nm wavelength) from coherent microwave spin waves.
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