To make a recording or a reproduction highly dense.
In this method, the recording of information or recording of information to be reproduced or reproducing of information on a record medium is performed by the irradiation of an energized beam. In this case, a super-high resolution film 6 is formed on the bottom surface of the SIL(Solid Imersion Lens) mounted in a floating head 3. A photochromic material is mainly used as the super-high resolution film 6 and the film uses multi-photon absorption, light discoloring property (light color extincting property) and absorption and saturation or the like. Thus, a high-density recording and reproduction is made possible by the effect of a high resolution. Moreover, when the refractive index of the super-high resolution film 6 in an area where the beam is not irradiated and the wavelength of the beam are respectively made to be (n), λ, it is preferable that the thickness (d) of the film 6 is roughly (λ/2n).
NAKAMURA KIMIO
TERAO MOTOYASU
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