Interaction of focused light beams with multilayer films: Optimization of magneto-optic recording media

Li, Z.-M.; Parsons, R. R.
July 1988
Applied Physics Letters;7/11/1988, Vol. 53 Issue 2, p92
Academic Journal
Reflectance and transmittance of a light beam strongly focused on multilayer thin films are derived at far field. Using the Fourier transfer technique, the reflectance (transmittance) can be expressed in terms of the reflection (transmission) matrix for plane waves. The readout from magneto-optic multilayer films is optimized for a strongly focused beam. It is found that when the focal spot size w0 is less than three wavelengths, the readout is significantly different from that calculated for plane waves.


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