重复激光脉冲对熔石英损伤的演化机制
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摘要
采用重复频率为10 Hz,波长为1064 nm的纳秒激光脉冲辐照熔石英元件,通过改变激光作用脉冲数,研究了不同脉冲累积效应对样品损伤形貌的影响。研究发现熔石英样品损伤主要来自于等离子冲击波作用,且损伤后,样品带隙会发生明显降低。对比激光作用样品内部和表面形貌,发现激光作用样品内部时,内部约束层使等离子冲击作用时间加长。通过对比损伤形貌的差异,可以将损伤形貌由内到外分为断裂融化区、断裂区、融化区三个部分,并通过冲击波压强变化,对各损伤区形貌成因进行了解释。
The fused elements is irradiated by the nanosecond pulsed laser with the frequency of 10 Hz and the wavelength of 1064 nm,by changing the number of action laser pulses to study the influence of different pulse accumulation effects on the damage morphology of fused silica samples.It is found that the damage of the fused silica samples mainly comes from the role of the plasma shock wave,the sample bandgap will be significantly reduced after the injury.The internal confinement layer prolongs the time of the plasma impact when the internal and surface morphology of the sample are compared.By comparing the damage morphology,the damage zones from the inside to the outside can be divided into three parts:the fracture melting zone,the fracture zone and the melting zone,and the cause of the damage area is explained by the change of the shock wave pressure.
The fused elements is irradiated by the nanosecond pulsed laser with the frequency of 10 Hz and the wavelength of 1064 nm,by changing the number of action laser pulses to study the influence of different pulse accumulation effects on the damage morphology of fused silica samples.It is found that the damage of the fused silica samples mainly comes from the role of the plasma shock wave,the sample bandgap will be significantly reduced after the injury.The internal confinement layer prolongs the time of the plasma impact when the internal and surface morphology of the sample are compared.By comparing the damage morphology,the damage zones from the inside to the outside can be divided into three parts:the fracture melting zone,the fracture zone and the melting zone,and the cause of the damage area is explained by the change of the shock wave pressure.
引文
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[2]C Clark,R Bassiri,I W Martin,A Markosyan,P G Murray,D Gibson,S.Rowan,M.M.Fejer,Comparison of single-layer and double-layer anti-reflection coatings using laser-induced damage threshold and photothermal common-path interferometry[J].Coatings,2016,6:20.
[3]Wang Y L,Zhao Y A,Xie X Y,et al.Laser damage dependence on the size and concentration of precursor defects in KDP crystals:view through differently sized filter pores[J].Optics letters,2016,41(7),1534-1537.
[4]DENG Zongcai,LI Pengyuan.Research on resistance to corrosion of reinforced concrete columns with FRP wraps[J].Fiber Reinforced Plastics/Composites,2008,5:34-36.(in Chinese)邓宗才,李朋远.FRP加固RC柱抗腐蚀性能[J].玻璃钢/复合材料,2008,5:34-36.
[5]ZHAO Jianjun,SONG Chunrong,LIU Jin.Thermal and mechanical effect in optical material induced by repetitive pulse laser[J].Acta Photonica Sinica 2016,35(12):1856-1860.(in Chinese)赵建君,宋春荣,刘进.重复脉冲激光辐照光学材料的热力效应[J].光子学报,2016,35(12):1856-1860.
[6]LUO Fu,SUN Chenwei,DU Xiangwan.Stress relaxation damage in K9 glass plate irradiated by 1.06μm CW laser[J].High Power Laser and Particle Beams,2001,13(1):19-23.(in Chinese)罗福,孙承纬,杜祥琬.106μm连续激光照射下K9玻璃的应力松弛破坏[J].强激光与粒子束,2001,13(1):19-23.
[7]QIU Rong,WANG Junbo,REN Huan,et al.Growth of laser-induced damage in fused silica under nanosecond laser irradiation[J].High Power Laser and Particle Beams,2012,24(5):1057-1062.(in Chinese)邱荣,王俊波,任欢,等.纳秒激光诱导熔石英光学玻璃的损伤增长[J].强激光与粒子束,2012,24(5):1057-1062.
[8]WANG Jinduo,GUO Xiqing,YU Jin.Simulation and analysis of laser-induced damage in fused silica with pulse widths from 150 fs to 10 ps[J].High Power Laser and Particle Beams,2015,27(4):041002.(in Chinese)王金舵,郭喜庆,余锦.150fs~10ps脉宽下熔石英激光损伤的仿真与分析[J].强激光与粒子束2015,27(4):041002.
[9]QIAO Hongcao,ZHAO Jibin,LU Ying.Current statusof laser-induced shock wave application technology[J].Surface Technology,2016,45(1):1-6.(in Chinese)乔红超,赵吉宾,陆莹.激光诱导冲击波应用技术研究现状[J].表面技术,2016,45(1):1-6.
[10]Fan Chinghua and Jon P.Longtin,Modeling optical breakdown in dielectrics during ultrafast[J].Applied optics,2001,40(18):3124-3131.
[11]ZOU W F,XIE Y M,XIAO X,et al,Application of thermal stress model to paint removal by Q-switched Nd∶YAG laser[J].Chinese Physics B,2012,23(7):74205.
[12]LI Shixiong,ZHANG Zhengping,QIN Shuijie,et al.Research on the temperature and thermal stress of fused silicairradiated by a laser pulse[J].Laser and Infrared,2016,46(7):786-791.(in Chinese)李世雄,张正平,秦水介,等.单个脉冲作用下熔融石英的温度和热应力研究[J].激光与红外,2016,46(7):786-791.
[13]HU Peng,CHEN Faliang.Inclusion damage mechanisms of optical glass under laser irradiation[J].High Power Laser and Particle Beams,2005,17(7):961-965.(in Chinese)胡鹏,陈发良.激光辐照下杂质诱导光学玻璃损伤的两种机理[J].强激光与粒子束,2005,17(7):961-965.
[14]HU R F,HAN J H,FENG G Y,et al,Study on the phase trasition of fracture region of laser indued in fused by focused nanosecond pulse[J].Optik-International Journal for Light and Electron Optics,2017,140:427-433.
[15]TIAN Runni,WANG Junbo,QIU Rong,et al.Ultra-fast diagnosis of monocrystalline silicon ablated by ns and fs laser[J].Laser Technology,2015,39(6):765-768.(in Chinese)田润妮,王俊波,邱荣,等.纳秒和飞秒激光烧蚀单晶硅的超快诊断[J].激光技术,2015,39(6):765-768.
[16]WANG Zh,FENG G Y,HAN J H,et al,Fabrication of micro-hole arrays using femtosecond laser by coated with aluminum film on fused silica sheet[J].Optical Engineering,2016,55(10):105101.
[17]WANG Tao,ZHAO Yuanan,HUANG Jianbin,et al.Cumulative effect of optical film damage under repetitive rate laser[J].High power laser and particle beam,2005,17(b04):171-174.(in Chinese)王涛,赵元安,黄建兵,等.重复率激光作用下光学薄膜损伤的累积效应[J].强激光与粒子束,2005,17(b04):171-174.
[18]Gallais L,Natoli J,Amra C.Statistical study of single and multiple pulse laser-induced damage in glasses.[J].Optics Express,2002,10(25):1465-1474.
[19]Cheng S C,Schiefelbein S L,Moore L A,et al.Use of EELS to study the absorption edge of fused silica[J].Journal of Non-Crystalline Solids,2006,352(28-29):3140-3146.
[20]Kajihara K,Hirano M,Skuja L,et al.Intrinsic defect formation in amorphous Si O 2,by electronic excitation:Bond dissociation versus Frenkelmechanisms[J].Phys.rev.b,2008,78(9):1884-1898.
[21]WEI W H,FANG L,YANG Z Y,et al.Effect of Sb on structure and physical properties of Ge Sbx Se7-x chalcogenide glasses[J].Journal of Inorganic Materials,2014,29(11):1218-1222.