Fig. 5: Experimental results of a four-function doublet.

a Schematic of the doublet composed of a dual-function cylindrical lens with NA ~ 0.14 as the converging element and the multi-perturbation device in Fig. 3 with NA ~ 0.05 as the diverging element. Bright field optical microscope images of the diverging (b) and converging (c) elements. SEM images of the diverging element at its center (d) and converging element at its corner (e). Arrows indicate the direction of the phase gradient. f Measured transverse intensity distributions for the four-function doublet at the shared focal plane. g Estimated Q-factors for the four lensing functions by integrating the optical intensity over the focal features (focal lines) as a function of wavelength (Supplementary Section 10). Device dimensions are detailed in Table S1