Figure 1 | Working principle of the multifocal metalens. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Figure 1 | Working principle of the multifocal metalens.

Caption

Figure. 1 | Working principle of the multifocal metalens. a, An illustration of the multifocal metalens. b, an illustration of the MMISM setup. MM, multifocal metalens; IP, intermediate image plane; BE, beam expander; DM, dichroic mirror; BP, bandpass filter; TL, tube lens; obj., objective lens. c, schematics of hybrid multiplexing methods and representative simulated PSFs of multifocal arrays generated using hybrid multiplexing. The multifocal arrays were designed with parameters of 20 × 20 foci, 3 μm pitch, 0.7 NA at a wavelength of 488 nm. Scale bar: 10 AU.

Credit

Yongjea Jo et al.

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CC BY

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