Optical information recording member

Abstract

Abstract PURPOSE:To contrive enhancement of recording sensitivity, erasing sensitivity or the like and durability in repeated use, by a method wherein a germanium oxide layer is provided on a base, and a recording layer capable of being heated by irradiating with light with the result of a change in an optical constant thereof is provided thereon. CONSTITUTION:The layer 2 of germanium oxide GeOx (x=2) is provided on the base 1 by vapor deposition, sputtering or other similar method. In this case, germanium oxide may have the composition of GeOx (xapprox.=2), depending on the condition. The recording layer 3 the optical constant of which is changed upon irradiation with light is provided on the layer 2. Accordingly, the intensity of reflected light reaches a minium, is then increased to a maximum, is reduced to a minimum, is increased to a maximum, and such increase and decrease are repeated to converge to a fixed value. In this case, all of the maxima, minima and the limit can be made to be small. Accordingly, by providing the germanium oxide layer 2 between the base 1 and the recording layer 3, it is possible to enhance the efficiency of incidence of light, and to enhance the overall recording sensitivity.

Inventors

• 👤 Noboru Yamada
• 👤 昇 山田
• 👤 Kenichi Nishiuchi
• 👤 健一 西内
• 👤 Yoshito Ninomiya
• 👤 二宮　義人
• 👤 Masatoshi Takao
• 👤 高尾　正敏

Bibliographic Details