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(a) Simulated light field in the x-z plane of the off-axis meta-lens at an incident wavelength of 1550 nm; (b) Simulated light field in the x-z plane of the off-axis meta-lens at an incident wavelength of 1701 nm; (c) Light intensity distribution in the z direction at x = 22 μm for λd and λ incidence; (d) Superposition of the two light intensity curves in (c).
