CAJ | 학술논문

采用1064 nm激光在5 kHz、不同脉宽条件下对CCD探测器进行了损伤实验，观察到饱和干扰、线状损伤和完全损伤等一系列的损伤现象，并测量计算了各种损伤现象相应的损伤阈值，研究了损伤阈值与脉冲宽度之间的关系。结果表明，脉冲宽度不同的5 kHz重频激光的损伤阈值基本相同， CCD探测器的损伤效果与重频激光的脉冲宽度变化关系不大。影响可见光CCD探测器激光损伤阈值的主要因素是单脉冲功率密度的量级大小，当脉宽减小导致单脉冲功率密度的量级显著增大时，损伤阈值减小；当单脉冲功率密度的量级不变时，损伤阈值也基本不变。
채용1064 nm격광재5 kHz、불동맥관조건하대CCD탐측기진행료손상실험，관찰도포화간우、선상손상화완전손상등일계렬적손상현상，병측량계산료각충손상현상상응적손상역치，연구료손상역치여맥충관도지간적관계。결과표명，맥충관도불동적5 kHz중빈격광적손상역치기본상동， CCD탐측기적손상효과여중빈격광적맥충관도변화관계불대。영향가견광CCD탐측기격광손상역치적주요인소시단맥충공솔밀도적량급대소，당맥관감소도치단맥충공솔밀도적량급현저증대시，손상역치감소；당단맥충공솔밀도적량급불변시，손상역치야기본불변。
The experiment that visible CCD was irradiated by 1.06μm laser of different pulse widths at 5 kHz were carried out individually. Similar injury phenomenon was observed, which includes disturbance phenomenon, point damage, linear damage and complete damage. The damage threshold of each injury state was measured. Furthermore, the relationship between pulse width and damage threshold was also studied. The results show that the damage thresholds of laser of different pulse-widths at 5 kHz are identical and the effect of laser damage is not correlated with the change of laser pulse width, but it is shown that the magnitude of single-laser-pulse power density affected damage threshold considerably. The magnitude of single-laser-pulse power density would increase as the pulse width decreased, and the damage threshold of CCD detector would be lower.