欢迎访问《兵工学报》官方网站,今天是 分享到:

兵工学报 ›› 2014, Vol. 35 ›› Issue (9): 1408-1413.doi: 10.3969/j.issn.1000-1093.2014.09.012

• 论文 • 上一篇    下一篇

皮秒激光对电荷耦合器件多脉冲损伤效应研究

邵俊峰1,2, 刘阳3, 王挺峰1, 郭劲1   

  1. (1.中国科学院 长春光学精密机械与物理研究所 激光与物质相互作用国家重点实验室,吉林 长春 130033;
  • 收稿日期:2013-12-17 修回日期:2013-12-17 上线日期:2014-11-03
  • 作者简介:邵俊峰(1984—), 男,助理研究员,博士研究生
  • 基金资助:
    激光与物质相互作用国家重点实验室自主基金项目(SKLLIM-1303); 长春光学精密机械与物理研究所实验室基金项目(SKLLIM-2013)

Damage Effect of Charged Coupled Device with Multiple-pulse Picosecond Laser

SHAO Jun-feng1,2, LIU Yang3, WANG Ting-feng1, GUO Jin1   

  1. (1.State Key Laboratory of Laser Interaction with Matter, Changchun Institute of Optics, Fine Mechnics and Physics,Chinese Academy of Sciences, Changchun 130033, Jilin, China;2.University of Chinese Academy of Science,3.Institute of North Electronic Equipment, Beijing 100191, China)
  • Received:2013-12-17 Revised:2013-12-17 Online:2014-11-03

摘要: 为了研究短脉冲激光对光电系统的作用机理,开展了高重频皮秒激光对行间转移Wat-902B型电荷耦合器件(CCD)的损伤实验研究,并对损伤机理进行了分析。调整皮秒激光指向相机光学系统入瞳位置,并使用电动转台方法控制激光与光学系统的交汇时间,从而控制到达光电探测器的脉冲个数。采用激光传输的二阶矩理论获得了激光到达CCD靶面的光斑能量分布,光斑测试精度优于20.3%. 考虑到实验误差,1.5 ns、400 ps千赫兹高重频激光条件下,转台转速201°/s,器件功能性损伤阈值为13.6~121.0 mJ/cm2,显著小于单脉冲损伤阈值263~1 146 mJ/cm2. 单脉冲器件功能性失效机理为垂直转移电路电极间短路,多脉冲激光条件下的器件功能性失效机理与单脉冲损伤显著不同,表现为多线损伤的积累过程。

关键词: 光学, 皮秒激光, 多脉冲损伤, 损伤机理, 电荷耦合器件

Abstract: The action mechanism of high repetitive ultra-short laser interaction on electro-optic system has been drawn great attention recently. The experimental damage effect and mechanism of single and multiple-pulse picosecond lasers on Wat-902B interline charged coupled device (CCD) are reserched. The experimental setup mainly includes lasers, test subject, and camera. It maintains that the picosecond laser points at the optical entrance puil of camera all the time. The camera is installed on an electric revolving stage to control the time of intersection between a laser and the test subject. The second moment method is employed to obtain the laser diameters on CCD surface and its accuracy is better than 20.3%. The experimental results show that the functional damage threshold of multiple-pulse laser is about 13.6~121.0 mJ/cm2, which is severely lower than that of 1.5 ns and 400 ps kilohertz-repetition-rate single-pulse lasers, approximating 263~1 146 mJ/cm2. The damage mechanism of single-pulse laser is to lead to short circuit between CCD vertical transfer electrode lines, but the damage mechanism of multiple-pulse laser is obviously different from that of single pulse laser, which is to cause an accumulated damage effect.

Key words: optics, picosecond laser, multiple-pulse laser damage, damage mechanism, charged coupled device

中图分类号: