摘要
研制了一种适用于大功率连续激光的高速斩波器 ,并用其配合连续半导体激光实现了距离选通的主动成像 ,消除了大气后向散射对成像对比度的不利影响。从理论和实验角度研究了调制脉冲特性、调制器承受激光辐照能力及门控触发电平的同步性。给出了实验系统结构示意图 ,实验结果表明该系统能有效消除后向散射光柱。
A range-gated active imaging system composed of CW laser,chopper and ICCD is developed.Of particular importance,high-power CW laser can be used in the system and the influence of atmospheric back scattering be eliminated at the same time.The characteristic of laser pulse,damage thresholds of chopper and synchronization of TTL trigger are evaluated by theoretical analysis and experimental measurement.Range-gated imaging experiments show the system can reduce atmospheric influence effectively.Disadvantages of the system such as vibration and large quantity of heat are presented finally.
出处
《激光杂志》
CAS
CSCD
北大核心
2004年第6期15-16,共2页
Laser Journal
基金
国防科技基础研究基金资助课题
