Terahertz emission via ultrashort-pulse excitation of magnetic metalfilms
2004
We observe terahertz emission by optical rectification of an intense 1.5-eV,
50-fs pulse in single-crystal iron thin films grown by molecular beam epitaxy. The
azimuthal dependence of the emission indicates the presence of a magnetic
nonlinearity and a nonmagnetic surface nonlinearity.
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