Multi-dimensional optical storage method using polyacrylonitrile as optical storage medium
An optical storage medium, polyacrylonitrile technology, applied in the field of optical storage, can solve problems such as high power consumption, large power consumption, and large space occupation, and achieve the effect of reducing performance requirements, system costs, and performance requirements
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Embodiment 1
[0034] figure 1 Corresponding to the optical path diagram of the system using the microporous structure as the storage unit.
[0035] A femtosecond laser is used to generate the required femtosecond laser pulses.
[0036] The high-speed optical switch is used to control the laser pulse switch. For example, when the written data is 0, the switch is turned off, and the material is not processed. When the written data is 1, the switch is turned on, and a micropore structure is processed in the material. The optical switch can be implemented in various ways such as galvanometer, Pockels cell, electro-optic modulator and other polarization elements combined with polarizers, which are not listed here.
[0037] Mirrors are used to reflect the light beam to the objective lens.
[0038] The objective lens is used to focus the light beam to process the material.
[0039] The sample is a polyacrylonitrile film or a polyacrylonitrile disk. Using the multiphoton absorption effect, a fem...
Embodiment 2
[0043] figure 2 Corresponding to the schematic diagram of using the second structure as a storage unit. Embodiment 2 uses processing / unprocessing to represent 0 / 1, so an optical switch can be used to control processing or not.
[0044] Specifically, the femtosecond laser generates the required femtosecond laser pulses.
[0045] The laser modulation unit is used for pulse shaping of the laser, including intensity modulation, pulse width modulation, polarization modulation, time domain modulation, etc., and can use rotatable half-wave plates, Pockels cells, electro-optic modulators, delay lines, and partial coating reflections The lens group and other components can be implemented in various ways, which are not listed here.
[0046] High-speed optical switches are used for laser pulse switching. For example, when the written data is 0, the switch is turned off, and the material is not processed. When the written data is 1, the switch is turned on, and an anisotropic structure...
Embodiment 3
[0053] image 3 Corresponding to the schematic diagram of using the third structure as a storage unit. Embodiment 3 is to process all positions of the material, and change the birefringence characteristics of the structure by modulating the laser. Therefore, the laser can be set to be normally on, and the laser modulation unit is required to dynamically adjust the parameters of the laser when processing different structures. regulation.
[0054] Specifically, the femtosecond laser generates the required femtosecond laser pulses.
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