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Creators/Authors contains: "Zhou, Ziyuan"

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  1. ; ; ; ; ; ; ; (, Proc. of SPIE Vol. 11092)
    Full Text Available 
  2. ; ; ; ; (, Journal of the Optical Society of America B)
  3. ; ; ; ; ; ; (, Advanced Materials)
    Abstract Microlenses are desired by a wide range of industrial applications while it is always challenging to make them with diffraction‐limited quality. Here, it is shown that high‐quality microlenses based on Pancharatnam–Berry (PB) phases can be made with liquid crystal polymers by using a plasmonic photopatterning technique. Based on the generalized Snell's law for the PB phases, PB microlenses with a range of focal lengths andf‐numbers are designed and fabricated and their point‐spread functions and ability to image micrometer‐sized particles are carefully characterized. The results show that these PB microlenses withf‐number down to 2 are all diffraction‐limited. The capability of arraying these PB microlenses with 100% filling factor with a step‐and‐flash approach is further demonstrated. 
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