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Conventional optical zoom system is bulky, expensive and complicated for realtime adjustment. Recent progress in the metasurface research has provided a newsolution to achieve innovative compact optical systems. In this paper, wepropose a highly integrated zoom lens with dual field-of-view (FOV) based ondouble sided metasurfaces. With silicon nanobrick arrays of spatially varyingorientations sitting on both side of a transparent substrate, this ultrathinzoom metalens can be designed to focus an incident circular polarized beam withspin-dependent FOVs without varying the focal plane, which is important forpractical applications. The proposed dual FOV zoom metalens, with theadvantages such as ultracompactness, flexibility and replicability, can findapplications in fields which require ultracompact zoom imaging and beamfocusing.

A Dual Field-of-View Zoom Metalens