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Hologram recording material and hologram recording medium

一种全息照相、记录材料的技术，应用在全息图记录材料、记录载体材料、记录信息存储等方向，能够解决不能进行记录、流动性降低、记录材料漏出等问题，达到高灵敏度、高折射率变化的效果

Inactive Publication Date: 2007-04-25
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The holographic recording materials described in the above two publications are in a liquid state, and pre-exposure treatment is required when performing holographic recording, and recording cannot be performed at the initial stage of exposure.
That is, when the recording material has fluidity in a liquid phase, since the interference fringes generated by the interference of light cannot be maintained in its position, it is necessary to perform exposure treatment in advance to reduce its fluidity.
In addition, when the holographic recording material is in a liquid state, there is also a problem that the recording material leaks from the medium after forming the recording medium.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0084] A holographic recording material was produced by the sol-gel method using diphenyldimethoxysilane and a titanium butoxide polymer represented by the following structural formula in the following steps.

[0085]

[0086] (Synthesis of matrix material)

[0087] 7.8 g of diphenyldimethoxysilane and 7.2 g of a titanium butoxide polymer (manufactured by Nippon Soda, B-10) were mixed in 40 mL of a tetrahydrofuran solvent to prepare an alkoxide solution. That is, the molar ratio of Si and Ti is 1:1.

[0088] A solution consisting of 2.1 mL of water, 0.3 mL of 1N aqueous hydrochloric acid solution, and 5 mL of tetrahydrofuran was dropped into the alkoxide solution at room temperature while stirring, and the stirring was continued for 2 hours to carry out a hydrolysis reaction. Thus, a sol solution A containing an organometallic compound of Si:Ti:phenyl = 1:1:2 (molar ratio) was obtained.

[0089] (photopolymerizable monomer)

[0090] Polyethylene glycol diacrylate (manufa...

Embodiment 2

[0112] A holographic recording material was obtained in exactly the same manner as in Example 1 except that the ratio of the base material (as a non-volatile component) was 46% by weight relative to the entire holographic recording material. Furthermore, a hologram recording medium is produced.

[0113] The softening temperature of the holographic recording material layer was -16°C.

[0114] For the holographic recording medium sample of embodiment 2, it can be recorded without pre-exposure treatment, and the initial recording sensitivity is 0.002 [M# / (m) / (cm 2 )], lower than the sensitivity value of the sample of Example 1.

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Abstract

A hologram recording material and a hologram recording medium suitable for volume hologram recording in which high refractive index variation, high sensitivity, low scattering, environmental resistance, durability, low dimensional variation and high multiplicity are attained without requiring a pre-exposure treatment at the time of recording. The hologram recording material contains a matrix material having a softening point of 50 DEG C or above, and a photopolymerizable monomer which is in liquid phase at room temperature. It is preferable that 50-90 wt% of the matrix material is contained relative to the total of the hologram recording material. The hologram recording material preferably has a softening point of 0 DEG C or above.

Description

technical field [0001] The present invention relates to a hologram recording material suitable for volume type hologram recording and a hologram recording medium having the hologram recording material. Background technique [0002] As a recording technology capable of large-capacity and high-speed transmission, research and development of holographic memory is underway. In O plus E, Vol. 25, No. 4, 385-390 (2003), the basic configuration and future prospects of the holographic memory are described. [0003] The properties sought for holographic recording materials include, for example, high refractive index change during recording, high sensitivity, low scattering, environmental resistance, durability, low dimensional change, and high multiplicity. As a holographic recording material, a photopolymer material mainly composed of an organic binder polymer and a photopolymerizable monomer is known. [0004] For example, Japanese National Publication No. 11-512847 discloses a v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03H1/02G03F7/004G03F7/033G03F7/075G11B7/0065G03F7/00
CPCG03H2001/0264G11B7/24044G11B7/2531G03F7/0757G11B7/0065G03H2260/12G11B7/249G03H1/02G11B7/245G03F7/0042G03F7/001
Inventor 水岛哲郎吉成次郎塚越拓哉三浦荣明春原秀树井原理惠
Owner TDK CORPARATION
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