Preparation method of sliver/titanium dioxide film materials used for blue-ray holographic storage

Abstract

The invention discloses a preparation method of sliver / titanium dioxide film materials used for blue-ray holographic storage, and belongs to the field of optical information storage material preparation. The preparation method comprises the following steps: preparing a titanium dioxide film, tannin acid solution of which the pH (Potential Of Hydrogen) value is 8.5, silver nitrate solution and a titanium dioxide film attached with tannin acid, obtaining a sliver / titanium dioxide film with a water bath heating method, and carrying out a spectrum test and holographic storage on the sliver / titanium dioxide film. According to the preparation method, the tannin acid is used as reductant to obtain the sliver / titanium dioxide film materials. Through the detection of an absorption spectrum, compared with a traditional preparation method, the preparation method has the advantages of strong adsorption at a position of short wave and narrow absorption peak and is suitable for the holographic storage of short-wave light. The observation of a kinetic curve of holographic grating growth proves that the efficient and quick holographic storage of short-wavelength blue ray can be realized by the sliver / titanium dioxide film materials prepared with the preparation method.

Description

technical field [0001] The invention belongs to the field of preparation of optical information storage materials, in particular to a preparation method of a silver / titanium dioxide thin film material used for blue light holographic storage. Background technique [0002] As an important information storage technology emerging after magnetic storage, optical information storage has become an indispensable information carrier in the modern information society. Optical storage occupies an important position in the field of information storage due to its advantages of safety, low cost, and high efficiency. Among them, holographic data storage is considered to be an optical One of the most promising development directions in the storage field. The current holographic storage is mainly developed in the direction of high density, high transmission capacity, and large capacity. By shortening the wavelength of the writing light, the spot area required to store the same amount of inf...

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Problems solved by technology

[0003] In summary, there is an urgent need for a method in the prior art to solve the problem of weak absorption and non-concentrated absorption peaks of silver / titanium dioxide thin film materials at short wavelengths, so as to improve the efficiency and speed of its holographic storage

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