Chinese Optics Letters, Volume. 14, Issue 10, 100501(2016)

Low-cost method of fabricating large-aperture, high efficiency, Fresnel diffractive membrane optic using a modified moiré technique

Jian Zhang1, Mengjuan Li2, Ganghua Yin2, Jianchao Jiao2, Zhengkun Liu1、*, Xiangdong Xu1, and Shaojun Fu1
Author Affiliations
  • 1National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
  • 2Beijing Institute of Space Mechanics & Electricity, Beijing 100076, China
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    Figures & Tables(11)
    Schematic setup of the alignment system based on the moiré phenomenon.
    Analysis of two overlapped concentric-circle gratings.
    Conventional moiré fringe generated by a computer (P1=2.1 μm, P2=2 μm) with an x direction misalignment of (a) 0, (b) 0.25, (c) 0.5, and (d) 1 μm.
    The designed alignment mark on (a) the mask and (b) the wafer.
    The designed moiré fringe generated by a computer (P1=2.1 μm, P2=2 μm) with an x direction misalignment of (a) 0, (b) 0.2, (c) 0.5, and (d) 1 μm.
    Fabrication process of multi-level membrane FZLs.
    A replicated four-level membrane FZL.
    AFM profiles of four-level FZLs on fused silica before and after HF etching.
    Diffraction efficiency of a four-level membrane FZL.
    • Table 1. Comparison of AE between 5 FZLs Fabricated on Fused Silica by Using Conventional Alignment Marks and Modified Alignment Marks, (p1=4.2  μm, p2=4  μm)

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      Table 1. Comparison of AE between 5 FZLs Fabricated on Fused Silica by Using Conventional Alignment Marks and Modified Alignment Marks, (p1=4.2  μm, p2=4  μm)

      AE (μm)Sample 1Sample 2Sample 3Sample 4Sample 5
      Conventional Mark0.70.650.650.60.6
      Modified Mark0.50.40.40.350.25
    • Table 2. Comparison of Diffraction Efficiency between 5 FZLs Fabricated on Fused Silica by Using Conventional Alignment Marks and Modified Alignment Marks, (p1=4.2  μm, p2=4  μm)

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      Table 2. Comparison of Diffraction Efficiency between 5 FZLs Fabricated on Fused Silica by Using Conventional Alignment Marks and Modified Alignment Marks, (p1=4.2  μm, p2=4  μm)

      Diffraction EfficiencySample 1 (%)Sample 2 (%)Sample 3 (%)Sample 4 (%)Sample 5 (%)
      Conventional Mark42.545454748
      Modified Mark54555861.566.6
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    Jian Zhang, Mengjuan Li, Ganghua Yin, Jianchao Jiao, Zhengkun Liu, Xiangdong Xu, Shaojun Fu, "Low-cost method of fabricating large-aperture, high efficiency, Fresnel diffractive membrane optic using a modified moiré technique," Chin. Opt. Lett. 14, 100501 (2016)

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    Paper Information

    Category: Diffraction and Gratings

    Received: May. 6, 2016

    Accepted: Aug. 12, 2016

    Published Online: Aug. 2, 2018

    The Author Email: Zhengkun Liu (zhkliu@ustc.edu.cn)

    DOI:10.3788/COL201614.100501

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