Vortex light beam detector and preparation method thereof
A vortex beam and detector technology, applied in optical device exploration, optics, instruments, etc., can solve the problems of severe wavelength dependence, crosstalk mode, damage, etc.
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Embodiment 1
[0047] figure 1 It is a schematic diagram of a three-dimensional structure of a vortex beam detector provided in Embodiment 1 of the present invention, figure 2 It is a schematic diagram of a Y-Z side structure of a vortex beam detector provided in Embodiment 1 of the present invention. see figure 1 and figure 2 , the vortex beam detector includes:
[0048] The first substrate 110 and the second substrate 120 arranged oppositely; the cholesteric liquid crystal layer 130 between the first substrate 110 and the second substrate 120; the side of the first substrate 110 close to the second substrate 120 is formed with a first orientation Film 140; the first alignment film 140 comprises a first alignment region 111 and a second alignment region 112, and the alignment film molecular directors of the first alignment region 111 and the second alignment region 112 are arranged orthogonally; along the first direction ( figure 1 In the X direction), the first alignment region 111 a...
Embodiment 2
[0080] Figure 12 It is a schematic flow chart of a method for preparing a vortex beam detector provided in Embodiment 2 of the present invention, which is used to prepare the vortex beam detector provided in Embodiment 1 above. See Figure 12 , the preparation method comprises:
[0081] S510, providing a first substrate and a second substrate, where the first substrate and the second substrate are arranged opposite to each other.
[0082] Wherein, the first substrate and the second substrate can adopt flexible substrates or rigid substrates with high light transmittance (greater than or equal to 85%).
[0083] Exemplarily, the material of the first substrate and the second substrate may include quartz glass or ordinary glass, and the thickness of the substrate may be 1-2 millimeters (mm).
[0084] S520, forming a first alignment film on a side of the first substrate close to the second substrate, and forming a second alignment film on a side of the second substrate close to...
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