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Chinese Journal of Lasers, Volume. 51, Issue 23, 2304002(2024)

Focal‑Length and Wavefront Measurements of Lenses with Large Apertures and Long Focal Lengths

Xiaomeng Sun1,2, Xuejie Zhang2、*, Fangfang Cheng2, Shenlei Zhou2, Weixing Shen2, Xiaojun Ma2, Cheng Liu2, and Jianqiang Zhu1,2、**
Author Affiliations
  • 1Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, Anhui , China
  • 2Key Laboratory of High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
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    AbstractGet PDF(in Chinese)
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    References (30)
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    Schematic of measurement principle

    Fig. 1. Schematic of measurement principle

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    Experimental setup

    Fig. 2. Experimental setup

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    Recorded diffraction patterns. (a) With tested lens in optical path; (b) without tested lens in optical path

    Fig. 3. Recorded diffraction patterns. (a) With tested lens in optical path; (b) without tested lens in optical path

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    Reconstructed amplitude distributions

    Fig. 4. Reconstructed amplitude distributions

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    Measurement results of wavefront error of reference lens. (a) Proposed method; (b) interferometer

    Fig. 5. Measurement results of wavefront error of reference lens. (a) Proposed method; (b) interferometer

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    Measurement results of tested lens. (a) Maximum intensity versus distance; (b) amplitude distribution of light field near focal plane; (c) wavefront error

    Fig. 6. Measurement results of tested lens. (a) Maximum intensity versus distance; (b) amplitude distribution of light field near focal plane; (c) wavefront error

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    Error relationship curves. (a) Absolute error; (b) relative error

    Fig. 7. Error relationship curves. (a) Absolute error; (b) relative error

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    • Table 1. Effects of PIE measurement errors on lens focal length and wavefront error

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      Table 1. Effects of PIE measurement errors on lens focal length and wavefront error

      Source of errorError valueRelative error of focal lengthRoot mean square value of wavefront error
      Total error1.016×10-50.0058λ
      Reconstruction algorithm‒2.86×10-60.0029λ
      Noise recorded by detector11.05×10-60.0048λ
      Diffractive object scanning error0.1 pixel4.48×10-60.0013λ
      Distance error between diffractive object and detector0.1 mm8.60×10-60.0008λ
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    Xiaomeng Sun, Xuejie Zhang, Fangfang Cheng, Shenlei Zhou, Weixing Shen, Xiaojun Ma, Cheng Liu, Jianqiang Zhu. Focal‑Length and Wavefront Measurements of Lenses with Large Apertures and Long Focal Lengths[J]. Chinese Journal of Lasers, 2024, 51(23): 2304002

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    Paper Information

    Category: Measurement and metrology

    Received: Mar. 21, 2024

    Accepted: Apr. 29, 2024

    Published Online: Dec. 11, 2024

    The Author Email: Zhang Xuejie (sddxzxj@126.com), Zhu Jianqiang (jqzhu@mail.shcnc.ac.cn)

    DOI:10.3788/CJL240703

    CSTR:32183.14.CJL240703

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology