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- W4382994679 abstract "Meta-lens are a new type of planar optical element that can flexibly manipulate the phase, polarization and amplitude of the beam, and are currently receiving a great deal of attention as they are easier to process and manufacture. Off-axis meta-lens are a special type of meta-lens with a certain degree of dispersion that can be used as a beam-splitting element, providing a unique and feasible way to realize micro-miniature instruments. We analyze the effects of different numerical apertures and off-axis angles on the spectral resolution, focusing efficiency and simulation results of off-axis meta-lens to provide ideas for subsequent research and application of off-axis meta-lens. A number of off-axis meta-lens with parameters NA = 0.408 α = 13?, NA = 0.18 α = 13? and NA = 0.408 α = 20? were simulated through Lumerical software. The results show that the off-axis angle is related to the resolution; the larger the angle, the better the spectral resolution but the lower the focusing efficiency; when the numerical aperture is smaller, the smaller the coverage of the phase distribution, which will lead to a larger deviation between simulation and theory. The designer needs to balance the numerical aperture, off-axis angle and other parameters reasonably according to the requirements in order to achieve the desired effect. The findings of this study have important reference values for the theoretical analysis of off-axis meta-lens and the design of parameters in practical applications." @default.
- W4382994679 created "2023-07-04" @default.
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- W4382994679 date "2023-01-01" @default.
- W4382994679 modified "2023-09-30" @default.
- W4382994679 title "Characteristic Analysis of Off-Axis Meta-Lens" @default.
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- W4382994679 doi "https://doi.org/10.4236/opj.2023.136007" @default.
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