大气与环境光学学报 ›› 2009, Vol. 4 ›› Issue (3): 229-232.

• 光电技术 • 上一篇    下一篇

CCD在激光外差探测系统中的应用

马玉芬, 汪光骐, 陈博, 黎珉, 吴万青, 江超, 俞本立   

  1. 安徽大学光电信息获取与控制国家教育部重点实验室,安徽 合肥 230039
  • 收稿日期:2008-12-31 修回日期:2009-02-11 出版日期:2009-05-28 发布日期:2009-06-02
  • 通讯作者: 俞本立(1963-),男,安徽五河人,教授,博士生导师,主要从事光电技术和光传感方面的研究。 E-mail:benliyu@ahu.edu.cn
  • 作者简介:马玉芬(1983-),女,安徽淮北人,硕士研究生,主要从事激光测振系统的光学设计,加工,检验和分析方面的研究。
  • 基金资助:

    安徽省优秀青年科技基金:08040106903

Application of CCD in Laser Heterodyne Detection System

MA Yu-fen, WANG Guang-qi, CHEN Bo, LI Min, WU Wan-qing, JIANG Chao, YU Ben-li   

  1. Key Laboratory of Opto-electronic Information Acquisition and Manipulation, Anhui University, Hefei 230039, China
  • Received:2008-12-31 Revised:2009-02-11 Published:2009-05-28 Online:2009-06-02

摘要:

分析了激光外差探测系统中瞄准镜和望远镜光轴不共轴在实际应用中的不足;提出了利用分光镜和CCD成像技术进行聚焦和瞄准的方法。当望远镜发射光束会聚到目标物上的光斑最小时,目标物在CCD上成的图像最清晰,表明此时为最佳焦距;测量过程中,CCD探测到的视场大小不同,但观测到的视场中心和发射光斑会聚点的位置始终不变,使用过程中不需要实时调节,大大提高了系统的易操作性和实用性。最后通过实验得已验证。

关键词: 外差探测, CCD, 焦距调节, 瞄准

Abstract:

In laser heterodyne detection system, the deficiencies of non-coaxial between telescope and aiming in practical applications are analyzed, and an approach by the use of spectroscope and CCD imaging technology to focus and aim is introduced. When the spot of the telescope launch beams convergent to the target is the smallest,and the image is the clearest on CCD, the focus length is optimal; the sizes of the field of view detected by CCD are different as the distances of target are different, but the image of target and the spot location are always at the center of the field view. So the real-time adjustment is not needed. It improves the operation and practicality greatly. Experiments are verified at last.

Key words: heterodyne detection, CCD, focal length setting, aiming

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