Laser & Optoelectronics Progress, Volume. 59, Issue 21, 2105001(2022)

Super-Diffraction Focusing Based on Bessel Beam Controlled by Composited Light Field

Xiaotong Zhu, Pengcheng Zheng, and Xiangsheng Xie*
Author Affiliations
  • Department of Physics, College of Science, Shantou University, Shantou 515063, Guangdong, China
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    In the disciplines of focal field modulation, optical micro-machining, optical micromanipulation, and optical communication, the new optical field modulation technology has made significant achievements. In this study, we propose a composite light field modulation scheme based on the Bessel beam that realizes a distant super-diffraction limiting focus using the Bessel beam’s intrinsic angle spectrum and the annular aperture’s sharp edge diffraction. The theoretical and experimental results reveal that the bottle beam formed using the axicon-lens system has a focusing property and that the high-frequency components can be enhanced using the annular aperture’s sharp edge diffraction, resulting in super-diffraction properties bottle beam. The local focused light field is separated from the surrounding side lobe light field and is expected to be applied in far-field super-resolution microscopic imaging and optical tweezers.

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    Xiaotong Zhu, Pengcheng Zheng, Xiangsheng Xie. Super-Diffraction Focusing Based on Bessel Beam Controlled by Composited Light Field[J]. Laser & Optoelectronics Progress, 2022, 59(21): 2105001

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    Paper Information

    Category: Diffraction and Gratings

    Received: Sep. 20, 2021

    Accepted: Oct. 29, 2021

    Published Online: Oct. 24, 2022

    The Author Email: Xie Xiangsheng (xxs@stu.edu.cn)

    DOI:10.3788/LOP202259.2105001

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