Laser Journal, Volume. 45, Issue 10, 18(2024)

Development offrequency sweep light source control system for SS-OCT

LIANG Bohan1...2, GE Jiming3, CAO Junsheng1, CHEN Yongyi1,3,*, QIU Cheng1, LI Zaijin4, WANG Yubing1, LIANG Lei1, QIN Li1, and WANG Lijun1,45 |Show fewer author(s)
Author Affiliations
  • 1Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China
  • 3Jlight Semiconductor Technology Co., Ltd, Changchun 130000, China
  • 4Hainan Normal University, Haikou 570206, China
  • 5Peng Cheng Laboratory, Shenzhen 518000, China
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    In order to meet the control requirement of multi-channel synchronous drive of frequency sweep light source in SS-OCT system, a frequency sweep light source control system based on FPGA as the main control unit is developed. The system uses Xilinx XC7A100T chip to design the main control module, five enhanced Howland current sources with buffer feedback to design the laser drive module, ADN8834 chip to control TEC to design the laser temperature control module, and host computer software to carry out human-computer interaction. Finally, the "wavelength-current" query table is made through the wavelength output automatic test experiment, and the automatic continuous linear output experiment is carried out by calling the "wavelength-current" query table. The system shows the control effect of 1nm control accuracy in the full wavelength range of the laser and 0.01 nm control accuracy in any wavelength range, which can be used for reference in the field of integrated control of frequency sweep light source of SS-OCT.

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    LIANG Bohan, GE Jiming, CAO Junsheng, CHEN Yongyi, QIU Cheng, LI Zaijin, WANG Yubing, LIANG Lei, QIN Li, WANG Lijun. Development offrequency sweep light source control system for SS-OCT[J]. Laser Journal, 2024, 45(10): 18

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    Paper Information

    Category:

    Received: Mar. 21, 2024

    Accepted: Jan. 2, 2025

    Published Online: Jan. 2, 2025

    The Author Email: Yongyi CHEN (chenyy@ciomp.ac.cn)

    DOI:10.14016/j.cnki.jgzz.2024.10.018

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