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Dual wavelength sensitive photopolymer holographic recording material and preparation method thereof

A holographic recording material, photopolymer technology, applied in photosensitive materials, optics, instruments, etc.

Inactive Publication Date: 2003-10-15
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above-mentioned literatures, the problem of multi-wavelength storage materials is not involved, so there are still deficiencies in improving the storage density.

Method used

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  • Dual wavelength sensitive photopolymer holographic recording material and preparation method thereof
  • Dual wavelength sensitive photopolymer holographic recording material and preparation method thereof
  • Dual wavelength sensitive photopolymer holographic recording material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: according to the concrete preparation process of material of the present invention is as follows:

[0026] 1. Weigh each raw material by weight percentage;

[0027] 2. Dissolve polyvinyl alcohol (PVA, with a molecular weight of about 1750 g / mol) in distilled water and heat to 80°C, stir to dissolve it, and finally obtain a 10wt% PVA solution;

[0028] 3. Dissolve triethanolamine (TEA) in distilled water, fully dissolve, and then add to the PVA solution;

[0029] 4. Fully dissolve the erythrosine (ErB) body in distilled water to obtain an ideal dye solution, then add the dye solution to the PVA solution obtained in step 3 and fully stir to dissolve it completely;

[0030] 5. Dissolve the methylene blue crystal (MB) in distilled water separately to obtain the ideal dye solution, then add the dye solution into the PVA solution obtained in step 4 and stir fully to dissolve it completely;

[0031] 6. Finally, add acrylamide (AA) monomer and methylene bisacryl...

Embodiment 2

[0041] Embodiment 2: according to above-mentioned specific process preparation material, finally obtain photopolymer dry film component to be:

[0042] Polyvinyl alcohol: 40wt%

[0043] Acrylamide: 18wt%

[0044] Methylenebisacrylamide: 4wt%

[0045] Triethanolamine: 27.4wt%

[0046] Erythrosine: 0.12wt%

[0047] Methylene blue: 0.23wt%

[0048] Expose the material with Ar+ laser and He-Ne laser respectively, and the obtained diffraction efficiency growth curve is as follows figure 2 , the diffraction efficiencies of red light and green light are 17% and 16% respectively

Embodiment 3

[0049] Embodiment 3: prepare material according to above-mentioned specific process, finally obtain photopolymer dry film component to be:

[0050] Polyvinyl alcohol: 60wt%

[0051] Acrylamide: 12.6wt%

[0052] Methylenebisacrylamide: 4.3t%

[0053] Triethanolamine: 25wt%

[0054] Erythrosine: 0.21wt%

[0055] Methylene blue: 0.27wt%

[0056] The diffraction efficiencies of red light and green light are 30%, 20% respectively

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Abstract

The double-wavelength sensitive photopolymer holographic record material is one kind of dry photopolymer film containing PVA, acrylamide, methylene bispropenyl amide, triethanolamine, erythrosine andmethylthionine. It is prepared through weighing materials, dissolving PVA in distilled water to obtain 10 wt% concentration PVA solution, adding triethanolamine dissolved in distilled water into thePVA solution, adding erythrosine and methylthionine dissolved separately in distilled water, adding acrylamide crystal and methylene bispropenyl amide crystal to obtain photopolymer sol, spreading the sol onto plate to obtain dry photopolymer film after the water volatizes. The material of the present invention is sensitive to red light and green light, has no cross talk in information record and diffraction efficiency over 30 % and is suitable for double wavelength holographic storing.

Description

Technical field: [0001] The invention relates to multi-wavelength optical holographic storage, in particular to a dual-wavelength sensitive photopolymer holographic recording material and a preparation method thereof. Background technique: [0002] Optical holographic storage is a mass storage technology with high redundancy and capable of parallel read / write. In the current data transmission, it is one of the technologies to solve the bottleneck between computer transmission and storage. It is also one of the technical supports for fast transmission speed and large storage capacity required in the information Internet in the 21st century, so it has a broad development panorama. The application of holographic storage technology largely depends on the properties of materials. There are many holographic storage media, such as silver salt materials, dichromated gelatin, photoresists, photoconductive thermoplastics, photochromic materials, photorefractive crystals, and photopo...

Claims

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Application Information

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IPC IPC(8): G03C1/73G03H1/04G03H1/18
Inventor 刘学璋姚华文陈仲裕
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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