Magneto-optics
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| Magneto-optics | |
|---|---|
| Name | Magneto-optics |
| Field | Optics; Electromagnetism |
| Invented | 19th century |
| Discoverer | Michael Faraday |
| Units | various |
Magneto-optics Magneto-optics studies the interaction between magnetic fields and light, linking Michael Faraday, James Clerk Maxwell, Albert Einstein, Werner Heisenberg, and Pierre Curie through empirical and theoretical advances. This field connects experiments at institutions such as Cavendish Laboratory, Bell Labs, CERN, MIT, and Bell Telephone Laboratories with technologies developed by Sony, IBM, Hitachi, Samsung, and Panasonic.
Introduction
Magneto-optics arose from early work by Michael Faraday, Joseph von Fraunhofer, Heinrich Hertz, James Prescott Joule, and André-Marie Ampère, and later integrated with theories by Ludwig Boltzmann, Paul Dirac, Erwin Schrödinger, Max Planck, and Niels Bohr. Laboratories such as Royal Institution, Max Planck Institute for Solid State Research, Bell Labs, Lawrence Berkeley National Laboratory, and Rutherford Appleton Laboratory advanced experimental techniques alongside universities including University of Cambridge, Harvard University, Stanford University, and University of Tokyo. Funding, institutional collaboration, and awards from bodies like Royal Society, National Science Foundation, European Research Council, Nobel Prize, and IEEE have shaped research priorities and dissemination.
Physical principles
Fundamental principles derive from electromagnetic theory by James Clerk Maxwell and quantum mechanics by Erwin Schrödinger, Paul Dirac, and Werner Heisenberg. Phenomena rely on spin and orbital coupling concepts connected to Wolfgang Pauli, Lev Landau, Rudolf Mössbauer, and Felix Bloch, and utilize models developed by John Bardeen, Leon Cooper, and Robert Schrieffer in solid state contexts. Optical properties are described using frameworks influenced by Hendrik Lorentz, Pieter Zeeman, Arnold Sommerfeld, Lev Davidovich Landau, and Evgeny Lifshitz, with mathematical tools from Srinivasa Ramanujan, Henri Poincaré, Sophus Lie, and David Hilbert applied in dispersion, birefringence, and tensor formalisms.
Magneto-optic effects and phenomena
Key effects include rotations and ellipticity first observed by Michael Faraday and spectral splittings by Pieter Zeeman, later connected to Larmor precession and electronic transitions studied by Johannes Stark, Gustav Kirchhoff, and William Rowan Hamilton. Phenomena such as Kerr effects, Faraday rotation, magnetic circular dichroism, and Voigt effects build on experiments by John Kerr, Marcellin Berthelot, and Gustav Mie, and theoretical work by Lev Landau, John van Vleck, and Pascual Jordan. Nonlinear and quantum magneto-optic phenomena intersect with contributions from Richard Feynman, Freeman Dyson, Julian Schwinger, and Philip Anderson, and have been explored in contexts involving Josephson effect research and studies at facilities like SLAC National Accelerator Laboratory.
Materials and devices
Materials science contributions involve compounds and alloys investigated by Linus Pauling, Herbert Freundlich, Marie Curie, Irène Joliot-Curie, and Otto Stern, and include garnets, ferrites, dilute magnetic semiconductors, and topological insulators studied at Bell Labs, IBM Research, ETH Zurich, and Tohoku University. Device engineering draws on work by Thomas Edison, Alexander Graham Bell, Guglielmo Marconi, Lee De Forest, and Philo Farnsworth for optoelectronic integration, and modern implementation by companies like Sony, Panasonic, Hitachi, Toshiba, and Western Digital in magneto-optic drives, isolators, circulators, and sensors. Nanostructures and thin films exploit techniques developed at Argonne National Laboratory, Brookhaven National Laboratory, Los Alamos National Laboratory, and IBM Almaden Research Center.
Measurement techniques and instrumentation
Metrology uses polarimetry, ellipsometry, spectroscopy, and microscopy refined by researchers at National Institute of Standards and Technology, Fraunhofer Society, Institute of Physics, Rutherford Appleton Laboratory, and Los Alamos National Laboratory. Instrumentation incorporates lasers pioneered by Theodore Maiman, Arthur Schawlow, Charles Townes, Nicolas Basov, and Alexander Prokhorov, detectors advanced by Willard Boyle, George Smith, Alferov, and fabrication from ASML, Tokyo Electron, and Applied Materials. High-field experiments employ magnets and cryogenics developed at Brookhaven National Laboratory, CERN, Fermi National Accelerator Laboratory, Kurchatov Institute, and GSI Helmholtz Centre.
Applications and technologies
Applications span data storage, communication, sensing, and computing, linking to developments by IBM, Seagate Technology, Western Digital, Intel, and Nokia. Magneto-optic isolators and circulators enable fiber-optic networks used by AT&T, Verizon, Deutsche Telekom, and NTT, while sensors and imaging techniques inform research at NASA, European Space Agency, NOAA, Philips, and GE Healthcare. Emerging quantum and spintronic devices connect to projects at Microsoft Research, Google, Alibaba DAMO Academy, and initiatives funded by DARPA and European Commission.
Historical development and key contributors
The chronology begins with Michael Faraday and continues through Pieter Zeeman, John Kerr, James Clerk Maxwell, Paul Dirac, and Lev Landau, with experimental advances at Royal Institution, Cavendish Laboratory, and Bell Labs. Twentieth-century development involved Erwin Schrödinger, Werner Heisenberg, Richard Feynman, John Bardeen, Walter Brattain, William Shockley, and materials advances by Linus Pauling and Marie Curie. Institutional and industrial contributions came from Bell Labs, IBM Research, Siemens, General Electric, and national laboratories worldwide, with recognition through awards such as the Nobel Prize and prizes from IEEE and Royal Society.