A kind of holographic recording medium, its preparation method and application
A holographic recording medium and holographic recording technology, applied in the field of holographic recording medium, and its preparation, can solve the problems of single function and cumbersome preparation steps of holographic recording medium, and achieve the effects of simple preparation method, excellent holographic recording performance and excellent fluorescent function
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[0041] The present invention also provides a method for preparing the holographic recording medium, comprising the following steps:
[0042] (1) Mix 10-60 parts of perovskite precursor, 30-80 parts of organic monomer and 0.5-10 parts of photoinitiator in a non-transparent container according to parts by weight to obtain a precursor mixed system;
[0043] (2) Fully dissolve the precursor mixed system in step (1) under ultrasonic or vibration conditions to obtain a uniform mixed solution, which is the holographic recording medium.
[0044] The present invention is realized based on the following scientific principle: the perovskite precursor in the holographic recording medium is uniformly dispersed and dissolved in the organic monomer and the photoinitiator; during the holographic recording process, under the irradiation of two beams of coherent light, the organic monomer A photopolymerization reaction occurs under the action of the initiator, and the organic monomer is consume...
Embodiment 1
[0054] A holographic recording medium, comprising the following components:
[0055]
[0056] The above-mentioned holographic recording medium is prepared according to the following steps:
[0057] (1) Weigh each compound in a brown glass bottle according to the ratio in the above table to obtain a precursor mixture;
[0058] (2) Ultrasonicating the precursor mixture obtained in step (1) for 300 seconds to fully dissolve it to obtain a uniform solution;
[0059] (3) Pour the homogeneous solution obtained in step (2) into a glass mold with a cavity thickness of 25 microns to prepare a holographic recording medium.
[0060] Utilize two beams of 330nm coherent light to expose the holographic recording medium, and the exposure time is 60 seconds, and the above-mentioned holographic recording medium is prepared into a holographic grating (the process is as follows figure 1 shown). The diffraction efficiency of the obtained holographic grating was 36%, and the photosensitivity...
Embodiment 2
[0062] A holographic recording medium, comprising the following components:
[0063]
[0064] The above-mentioned holographic recording medium is prepared according to the following steps:
[0065] (1) Weigh each compound in an opaque container according to the ratio in the above table to obtain a precursor mixture;
[0066] (2) Ultrasonicating the precursor mixture obtained in step (1) for 120 seconds to fully dissolve it to obtain a uniform solution;
[0067] (3) Pour the homogeneous solution obtained in step (2) into a glass mold with a cavity thickness of 5 microns to prepare a holographic recording medium.
[0068] The holographic recording medium was exposed with two beams of 405 nm coherent light for 60 seconds, and the above holographic recording medium was prepared into a holographic grating. The diffraction efficiency of the obtained holographic grating was 10%, and the photosensitivity of the holographic recording medium was 0.8 cm / mJ. Put the grating under a ...
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Abstract
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