Hologram recording method

Abstract

Abstract PURPOSE:To improve laser photosensitivity and diffraction efficiency by using allyl diglycol carbonate as a chief material monomer and 2, 2-bis[3, 5- dibromo-4-(2-methacryloyl oxyethoxy)phenyl]propane as an auxiliary material monomer. CONSTITUTION:The recording material consisting of the allyl diglycol carbonate, the 2, 2-bis[3, 5-dibromo-4-(2-methacryloyl oxyethoxy)phenyl]propane and a photopolymn. initiator is adopted for the photopolymerizing material contg. plural kinds of monomers having the photoreactivity and refractive index varying largely from each other. Such recording material is inserted between two sheets of surface materials and is subjected to a heating treatment; thereafter, the material is irradiated with coherent light. The refractive index modulation is executed simply by exposing the photosensitive plate in this way and the diffraction efficiency and resolving power, etc., are enhanced. The shifting of the surface materials, such as glass, during the operation does not arise.

Inventors

• 👤 Taichi Ichihashi
• 👤 市橋　太一
• 👤 Hideo Tanigawa
• 👤 英夫 谷川
• 👤 Akira Nagata
• 👤 章 永田

Bibliographic Details