1064 nm激光光热效应对CCD探测器干扰实验研究
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摘要
为了研究激光的光热效应对CCD探测器的干扰效应,利用1064 nm激光开展了对CCD探测器的干扰实验。实验采集数字图像的处理分析可明显观察到1064 nm激光对于CCD探测器的串扰现象。进行了激光照射CCD探测器随时间变化产生热噪声差对比实验,观察到了激光光热效应对于CCD探测器的干扰效果。实验表明CCD探测器表面温度随1064nm激光辐照功率的升高而逐渐升高的现象,由于光热效应带来的图像热噪声明显影响到了CCD探测器的成像效果。由于硅基CCD探测器对1064 nm波长的低光电响应率,研究光热效应对CCD探测器干扰效应尤为重要。
In order to study the interference of laser photothermal effect to CCD detector,interfering experiments of the CCD detector with 1064 nm laser were carried out. Through the processing and analysis of the digital image,the crosstalk of the CCD detector caused by 1064 nm laser can be observed. The contrast experiment of the thermal noise caused by laser radiation of the CCD detector with time change was carried out,and the interference effect of laser photothermal effect on CCD detector was observed. The results show that surface temperature of the CCD detector rises with the increase of 1064 nm laser irradiation power. Because of the low quantum efficiency of the silicon-based CCD detector to the light with wavelength of 1064 nm,it is very important to study the effect of photothermal effect on CCD detector.
In order to study the interference of laser photothermal effect to CCD detector,interfering experiments of the CCD detector with 1064 nm laser were carried out. Through the processing and analysis of the digital image,the crosstalk of the CCD detector caused by 1064 nm laser can be observed. The contrast experiment of the thermal noise caused by laser radiation of the CCD detector with time change was carried out,and the interference effect of laser photothermal effect on CCD detector was observed. The results show that surface temperature of the CCD detector rises with the increase of 1064 nm laser irradiation power. Because of the low quantum efficiency of the silicon-based CCD detector to the light with wavelength of 1064 nm,it is very important to study the effect of photothermal effect on CCD detector.
引文
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[2]LIU Qimin,FENG Yanming,ZHANG Dawei,et al.Experiments and analysis of color CCD camera jammed by RGB laser[J].Laser&Infrared,2016,46(11):1399-1403.(in Chinese)刘启民,俸彦鸣,张大炜,等.RGB激光干扰彩色CCD相机实验及分析[J].激光与红外,2016,46(11):1399-1403.
[3]GAO Run,NIU Chunhui,Li Xiaoying.Experiment and mechanism analysis of 632 nm laser jamming CCD and CMOS[J].Laser Journal,2016,37(9):5-9.(in Chinese)高润,牛春晖,李晓英.632 nm激光对CCD和CMOS的干扰实验及机理分析[J].激光杂志,2016,37(9):5-9.
[4]SHAO Ming,ZHANG Le,ZHANG Leilie,et al.Comparative study on saturation effect of 1.06μm laser jamming CCD and CMOS cameras[J].Journal of Applied Optics,2014,(1):163-167.(in Chinese)邵铭,张乐,张雷雷,等.1064 nm激光对CCD、CMOS相机饱和干扰效果对比研究[J].应用光学,2014,(1):163-167.
[5]MA Xinghua,LIU Zhengying,ZHANG Rongzhu.Influence of laser thermal effect on second harmonic generation in periodically poled lithium niobite crystal[J].High Power Laser and Particle Beam,2011,23(12):3302-3306.(in Chinese)马兴寰,刘正颖,张蓉竹.激光热效应对PPLN晶体倍频效率的影响[J].强激光与粒子束,2011,23(12):3302-3306.
[6]Koen Benoist,Ric Schleijpen.Modeling of the over-exposed pixel area of CCD cameras caused by laser dazzling[J].Proc.SPIE,2014,9251:92510H.
[7]R H Dyck,W Steffe.Effects of optical crosstalk in CCD image sensors[J].Conf on Application of Charge-Coupled Devieces,1978:1-55.
[8]Fu Y,Guo M,Phua P B.Cross-talk prevention in optical dynamic measurement[J].Opt.Lasers Eng.,2012,50:547-555.
[9]YU Xing,LIU Guodong,ZHANG Rongzhu.Study on the response characteristics of CCD under the influence of laser thermal effect[J].Optics&Optoelectronic TechnolOgy,2015,13(5):41-46.(in Chinese)于醒,刘国栋,张蓉竹.激光热效应对CCD探测响应过程的影响[J].光学与光电技术,2015,13(5):41-46.
[10]YU Xing,LIU Guodong,ZHANG Rongzhu.Study on the response characteristics of CCD under the influence of laser thermal effect[J].Optics&Optoelectronic Technology,2015,13(5):41-46.
[11]ZHANG Qiaoyun,CHEN Qingshan,NIU Chunhui.Jamming mechanism analysis of laser thermal effect on CMOS detector[J].Laser Journal,2018,39(2):72-76.(in Chinese)张巧云,陈青山,牛春晖.激光热效应对CMOS探测器的干扰机理分析[J].激光杂志,2018,39(2):72-76.
[12]ZHANG Chao,ZHNAG Wei,WANG Bin,et al.Experimental study on interference characteris-tics of CCD at different laser wavelengths[J].Laser Technology,2014,38(6):826-829.(in Chinese)张超,张伟,王滨,等.不同波长激光对CCD的干扰性实验研究[J].激光技术,2014,38(6):826-829.