Dual field-of-view step-zoom metalens

Research output: Contribution to journalLetterpeer-review


  • Guoxing Zheng
  • Weibiao Wu
  • Zile Li
  • Muhammad Qasim Mehmood
  • Ping'an He
  • Li Song

Colleges, School and Institutes


A conventional optical zoom system is bulky, expensive, and complicated for real-time adjustment. Recent progress in metasurface research has provided a new solution to achieve innovative compact optical systems. In this Letter, we propose a highly integrated step-zoom lens with dual field of view (FOV) based on double-sided metasurfaces. With silicon nanobrick arrays of spatially varying orientations sitting on both sides of a transparent substrate, this ultrathin step-zoom metalens can be designed to focus an incident circular polarized beam with handedness-dependent FOVs without varying the focal plane, which is important for practical applications. The proposed dual FOV step-zoom metalens, with advantages such as ultracompactness, flexibility, and replicability, can find applications in fields that require ultracompact zoom imaging and beam focusing.


Original languageEnglish
Pages (from-to)1261-1264
JournalOptics Letters
Issue number7
Early online date22 Mar 2017
Publication statusPublished - 1 Apr 2017