Nonlinear optical dye, photorefractive material composition, photorefractive substrate and hologram recording medium

Patent metadata

Field	Value
Publication number	US-2016230010-A1
Application number	US-201615134802-A
Country	US
Kind code	A1
Filing date	Apr 21, 2016
Priority date	Oct 25, 2013
Publication date	Aug 11, 2016
Grant date	—

Abstract

A nonlinear optical dye includes a compound represented by the general formula (1) below.

In the above general formula (1), each of X 1 , X 2 , X 3 and X 4 independently represents a hydrogen atom, an alkyl group having a carbon number of 1 to 6, a halogen atom, a hydroxyl group, a nitro group, a cyano group, or a methylsulfonyl group. In the present invention, it is preferred that each of X 1 , X 2 , X 3 and X 4 independently represents a hydrogen atom, an alkyl group having a carbon number of 1 to 6, or a halogen atom. In the present invention, it is also preferred that the nonlinear optical dye has a dipole moment of 2.1 D or less and a maximum absorption wavelength within a range of 315 to 360 nm.

First claim

What is claimed is:

1 . A nonlinear optical dye comprising a compound represented by general formula (1) below:

where each of X 1 , X 2 , X 3 and X 4 independently represents a hydrogen atom, an alkyl group having a carbon number of 1 to 6, a halogen atom, a hydroxyl group, a nitro group, a cyano group, or a methylsulfonyl group.

2 . The nonlinear optical dye according to claim 1 , wherein each of X 1 , X 2 , X 3 and X 4 in the general formula (1) independently represents a hydrogen atom, a methyl group, or a halogen atom.

3 . The nonlinear optical dye according to claim 1 , wherein the nonlinear optical dye has a dipole moment value of 2.1 D or less and a maximum absorption wavelength within a range of 315 to 360 nm.

4 . A photorefractive material composition containing the nonlinear optical dye according to claim 1 and a non-photoconductive transparent resin.

5 . A photorefractive substrate obtained using the photorefractive material composition according to claim 4 .

6 . A hologram recording medium comprising the photorefractive substrate according to claim 5 .

Assignees

• Toyo Kohan Co Ltd

Inventors

• Miura Sakiko

Classifications

• G02B1/04

  made of organic materials, e.g. plastics (G02B1/08 takes precedence) · CPC title

• G03H2001/0264

  Organic recording material · CPC title

• G03H1/02

  Details {of features involved during the holographic process; Replication of holograms without interference recording} · CPC title

• C09B51/00 Primary

  Nitro or nitroso dyes · CPC title

• G11B7/24044

  for storing optical interference patterns, e.g. holograms; for storing data in three dimensions [3D], e.g. volume storage (G11B7/24038 takes precedence) · CPC title