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Kerr Scanning Near Field Optical Microscope The Kerr scanning near-field optical microscope was developed as a new tool to provide high resolution magneto-optic imaging for suitably smooth magnetic media. In brief, submicron resolution is achieved by utilizing an approximately 75 nanometer metal ball excited at its plasmon resonant frequency as the near field optical transducer. The magneto-optic Kerr effect is determined by measuring the rotation of polarization of the light radiated by the excited plasmon resonant dipole. For further information about this instrument, please see:Silva, T. J., Schultz, S., and Weller, D., "Scanning near-field optical microscope for the imaging of magnetic domains in optically opaque materials" Appl. Phys. Letts. , 65, (6) 658 (1994). |