Non-linear Optics in Metals
The interaction of light with matter, in particular metals, is one of the classical areas of physical studies, and has contributed tremendously to our present understanding of physics. Light has been used successfully to investigate the electronic, magnetic and atomic structure of metal surfaces, as well as thin films, multi-layers, and interfaces. Such optical studies represent a non-destructive technique for materials characterization. The study of magnetism is of particular interest, not only for basic research, but also in view of a variety of applications like storage of information and magnetic recording. For many years the linear Kerr effect, typically exhibiting in metals Kerr rotations of less than one degree, has been used and developed as a successful tool for solid state physics research and applications. Only recently nonlinear optical effects in metals and in particular nonlinear magneto-optical effects have become an intensive area of studies. Due to the high interface sensitivity of nonlinear magneto-optics in contrast to linear magneto-optics, such studies lead to a new tool of investigating electronic stucture and magnetism at metallic interfaces, in thin films and multilayers. The high sensitivity of nonlinear optics and in particular the related, strikingly large Kerr rotations have been a remarkable experimental observation and an impressive example that Maxwell's equations still offer surprises. While future work on electronic and atomic structural phase transitions, on lateral and in-depth resolution of film structure, magnetic contrasts, domain structures, anti-ferromagnetism, or magnetic anisotropy effects will reveal the full potential of second harmonic light generation as a new tool of interface and film research, this book will give a comprehensive introduction to the state of the art in the subject, and will lay the ground for further developments.
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analysis anisotropy antiferromagnetic axis band structure behaviour Brillouin zone bulk calculated components configuration contributions density dielectric dielectric function dipole domain walls electron temperature electronic structure enhancement experimental Fe film Fermi Fermi energy ferromagnetic film thickness frequency function Hiibner interface inversion symmetry K. H. Bennemann Kerr angle Kerr spectra laser lattice layer Lett linear Kerr linear optics linear reflectivities longitudinal Magn magnetic field magnetization-induced magneto-optical effect magneto-optical Kerr effect matrix elements measured metals MOKE MSHG multilayer NOLIMOKE nonlinear Kerr rotation nonlinear magneto-optical nonlinear optical nonlinear susceptibility nonmagnetic observed oscillations p-polarized incident light parameters phase photon photon energy Phys probe pulse quantum-well refractive refractive index resonance response sample second harmonic sensitivity SH intensity SH light SHG signal SHG yield spin spin-orbit coupling substrate surface tensor elements theory thin films tion transition metals transitions transverse vector wave wavefunctions wavelength Wigner-Seitz cell
Journal of Physics: An Institute of Physics Journal ..., Volume 13, Issue 44
No preview available - 2001
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Epioptics-7: Proceedings of the 24th Course of the International School of ...
No preview available - 2004