大气与环境光学学报 ›› 2025, Vol. 20 ›› Issue (3): 299-311.doi: 10.3969/j.issn.1673-6141.2025.03.005

• “激光雷达新技术及其在大气环境中的应用”专辑 • 上一篇    

全固态OPO激光雷达及其对大气金属层的探测研究

杜丽芳 1, 肖春雷 2, 郑浩然 1, 程学武 3, 郭继鑫 1,4, 吴方 1,4, 李发泉3, 焦菁 1, 房硕 2, 林兆祥 5, 荀宇畅 6, 陈志善 6, 杨国韬 1*   

  1. 1 中国科学院国家空间科学中心, 北京 100190; 2 中国科学院大连化学物理研究所, 辽宁 大连 116023; 3 中国科学院精密测量科学与技术创新研究院, 湖北 武汉 430071; 4 中国科学院大学, 北京 100049; 5 中南民族大学, 湖北 武汉 430074; 6 太原理工大学, 山西 太原 030024
  • 收稿日期:2025-01-27 修回日期:2025-04-09 出版日期:2025-05-28 发布日期:2025-05-26
  • 通讯作者: E-mail: gtyang@nssc.ac.cn E-mail:lfdu@nssc.ac.cn
  • 作者简介:杜丽芳 (1985- ), 女, 山西忻州人, 硕士, 副研究员, 主要从事大气激光雷达方面的研究。E-mail: lfdu@nssc.ac.cn
  • 基金资助:
    国家重点研发计划 (2022YFC2807201), 国家自然科学基金面上项目 (42374204), 子午工程大科学装置计划

Research on atmospheric metal layers detection technology by all-solid-state optical parametric oscillator lidar

DU Lifang 1, XIAO Chunlei 2, ZHENG Haoran 1, CHENG Xuewu 3, GUO Jixin 1,4, WU Fang 1,4, LI Faquan 3, JIAO Jing 1, FANG Shuo 2, LIN Zhaoxiang 5, XUN Yuchang 6, CHEN Zhishan 6, YANG Guotao 1*   

  1. 1 National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China; 2 Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; 3 Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China; 4 University of Chinese Academy of Sciences, Beijing 100049, China; 5 South-Central Minzu University, Wuhan 430074, China; 6 Taiyuan University of Technology, Taiyuan 030024, China
  • Received:2025-01-27 Revised:2025-04-09 Online:2025-05-28 Published:2025-05-26

摘要: 本文介绍了基于光参量振荡 (OPO) 及光参量放大 (OPA) 技术研制的全固态OPO激光雷达系统, 及其在大气 金属成分探测上的应用。该激光雷达具备发射激光能量高 (可达100 mJ)、线宽窄 (小于200 MHz)、光斑均匀性好的优 点, 显著提升了激光雷达探测大气金属层的灵敏度, 其金属离子灵敏度可达0.02 cm−3 (空间分辨率1 km, 时间分辨率 1 h)。在北京和漠河等地的实验中, 该激光雷达成功获取了钙原子和钙离子的整夜演化数据, 并探测到高达300 km的 钙离子层。这些结果表明: 相较于传统的染料激光技术, 全固态激光雷达有高灵敏、高分辨的优点, 探测到的一系列 新现象有望促进空间物理新过程新机制的发现。此外, 本文还探讨了该技术在激光雷达探测领域的进一步应用潜力。

关键词: 大气金属层, 激光雷达, 光参量振荡及放大技术, 钙原子和钙离子层

Abstract: This paper introduces an all-solid-state lidar system based on optical parametric oscillator (OPO) and optical parametric amplification (OPA) technology, and its application in the detection of atmospheric metal components. The lidar system is distinguished by its high output energy (up to 100 mJ), narrow linewidth (< 200 MHz), and the excellent uniformity of laser spot, which significantly enhances its sensitivity for detecting metal ions in the atmosphere, and a detection sensitivity of 0.02 cm−³ for metal ions can be achieved at 1 km in 1 hour integration time. In the field experiments conducted in Beijing, Mohe, and other sites, the overnight evolution data of calcium atoms and ions were successfully obtained using the lidar system, and calcium ion layers extending up to 300 km in altitude were detected. These results indicate that, compared with traditional dye laser technology, the all-solid-state lidar has the advantages of high sensitivity and high resolution, and a series of new phenomena detected are expected to promote the discovery of new processes and mechanisms in space physics. In addition, this paper also discusses the prospective applications of this technology in advancing lidar detection capabilities.

Key words: atmospheric metal layers, lidar, optical parametric oscillation and optical parametric amplification technologies, calcium and calcium ion layer

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