Optics and Precision Engineering, Volume. 30, Issue 17, 2088(2022)

Continuous cubic phase plate with long depth of focus fabricated by femtosecond laser and its optical performance

Pengju LI*... Deng PAN* and Shunli LIU |Show fewer author(s)
Author Affiliations
  • College of Engineering Sciences, University of Science and Technology of China, Hefei230031, China
  • show less

    Traditional methods for generating beams with a long depth of focus, such as spatial light modulator and a combination of positive and negative lens, have several limitations, including a large size of optical elements, difficult integration with micro-nano optics and others. This makes the application of optical devices in aviation areas challenging. Thus, it is necessary to develop a method for generating beams with a long depth of focus beam, and fabricating an optical element with a simple structure, compact size, and good imaging quality. In this paper, we achieve this by using continuous cubic phase plate modulation. A phase plate with high dimensional accuracy (108 μm in diameter, 1.1 μm in height) and adjustable focal length (50-150 μm) and focal depth range (100-600 μm) is fabricated via femtosecond laser direct writing technology. The optical test of the phase plate demonstrates its long depth of focus and imaging ability. This method indicates new avenues in high performance integrated optics, micro/nano-optics manufacturing, and laser micro/nano manufacturing for aeronautical science and technology.

    Tools

    Get Citation

    Copy Citation Text

    Pengju LI, Deng PAN, Shunli LIU. Continuous cubic phase plate with long depth of focus fabricated by femtosecond laser and its optical performance[J]. Optics and Precision Engineering, 2022, 30(17): 2088

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category: Micro/Nano Technology and Fine Mechanics

    Received: Apr. 4, 2022

    Accepted: --

    Published Online: Oct. 20, 2022

    The Author Email: LI Pengju (lxy007@mail.ustc.edu.cn), PAN Deng (pandeng@tyut.edu.cn)

    DOI:10.37188/OPE.20223017.2088

    Topics