熔石英激光诱导损伤的太赫兹检测
|
摘要
基于透射式太赫兹时域光谱系统,对熔石英在不同能量激光诱导损伤与未损伤区域进行检测,获得其时域光谱及0.8～1.25 THz频谱图,分析了峰峰值、振幅、透射谱、折射率及吸收系数,结果表明,损伤区域与未损伤区域相比,其峰峰值、振幅、透射谱、折射率明显减小,且随着激光诱导能量的增加,损伤面积增大,这些参数也逐渐减小;吸收系数呈相反的变化趋势。因此,可利用熔石英太赫兹波段光学特性的变化,对其激光诱导损伤和损伤程度进行识别,为太赫兹时域光谱技术在激光诱导损伤识别分析中的应用做良好的铺垫。
In this study, the undamaged and damaged areas in fused silica induced by laser with different energies were tested with the transmission terahertz time-domain spectral system. The time domain signal and frequency spectra of 0.8-1.25 THz are obtained. The peak-to-peak value, amplitude, transmission spectrum, refractive index, and absorbance are analyzed. The results show that the peak-to-peak value, amplitude, transmission spectrum, and refractive index of the damaged area are obviously reduced compared with those of the undamaged area, and with the increase of laser energy and the enlargement of damaged area, these parameters gradually decrease. In contrast, the absorbance exhibits an opposite change. Therefore, the variation in the optical properties of fused silica in the terahertz wave band could be applied to distinguish the damages and analyze the degree of damage, which provides a good basis for applying the terahertz time domain spectral technique to the identification and analysis of laser-induced damage.
In this study, the undamaged and damaged areas in fused silica induced by laser with different energies were tested with the transmission terahertz time-domain spectral system. The time domain signal and frequency spectra of 0.8-1.25 THz are obtained. The peak-to-peak value, amplitude, transmission spectrum, refractive index, and absorbance are analyzed. The results show that the peak-to-peak value, amplitude, transmission spectrum, and refractive index of the damaged area are obviously reduced compared with those of the undamaged area, and with the increase of laser energy and the enlargement of damaged area, these parameters gradually decrease. In contrast, the absorbance exhibits an opposite change. Therefore, the variation in the optical properties of fused silica in the terahertz wave band could be applied to distinguish the damages and analyze the degree of damage, which provides a good basis for applying the terahertz time domain spectral technique to the identification and analysis of laser-induced damage.
引文
[1] Ge J M,Su J H,Chen L,et al.A new method for measurement of laser-induced damage threshold[J].Spectroscopy and Spectral Analysis,2016,36(5):1296-1299.葛锦蔓,苏俊宏,陈磊,等.一种激光损伤阈值测试新方法[J].光谱学与光谱分析,2016,36(5):1296-1299.
[2] Zhou Q,Wang J B,Qiu R,et al.Ultra-fast diagnosis of nanosecond laser induced fused silica damage[J].Chinese Journal of Lasers,2014,41(3):0303003.周强,王俊波,邱荣,等.纳秒激光诱导熔石英玻璃损伤的超快诊断[J].中国激光,2014,41(3):0303003.
[3] Shan C,Zhao Y A,Zhang X H,et al.Study on laser damage threshold of optical element surface based on Gaussian pulsed laser spatial resolution[J].Chinese Journal of Lasers,2018,45(1):0104002.单翀,赵元安,张喜和,等.基于高斯脉冲激光空间分辨测量光学元件表面激光损伤阈值研究[J].中国激光,2018,45(1):0104002.
[4] Su J H,Wang K K,Liang H F.Acoustic detection method of optical thin film damage based on frequency characteristics[J].High Power Laser and Particle Beams,2014,26(7):22-26.苏俊宏,王坤坤,梁海锋.基于频率特征的薄膜损伤声学判别方法[J].强激光与粒子束,2014,26(7):22-26.
[5] Zhao K,Zhan H L.Terahertz spectrum analysis technology[M].Beijing:Science Press,2017:4-6.赵昆,詹洪磊.太赫兹光谱分析技术[M].北京:科学出版社,2017:4-6.
[6] Yan Z J,Shi W,Hou L,et al.Investigation of aging effects in cross-linked polyethylene insulated cable using terahertz waves[J].Materials Research Express,2017,4(1):015304.
[7] Ma F Y,Chi Q,Su J P,et al.Study on the optical properties of ultra-thin metal films in the THz band[J].Spectroscopy and Spectral Analysis,2012,32(3):610-613.马凤英,池泉,苏建坡,等.超薄金属膜在太赫兹波段的光学特性研究[J].光谱学与光谱分析,2012,32(3):610-613.
[8] Grischkowsky D,Keiding S,van Exter M,et al.Far-infrared time-domain spectroscopy with terahertz beams of dielectrics and semiconductors[J].Journal of the Optical Society of America B,1990,7(10):2006-2015.
[9] Naftaly M,Miles R E.Terahertz time-domain spectroscopy of silicate glasses and the relationship to material properties[J].Journal of Applied Physics,2007,102(4):043517.
[10] Stoik C D,Bohn M J,Blackshire J L.Nondestructive evaluation of aircraft composites using transmissive terahertz time domain spectroscopy[J].Optics Express,2008,16(21):17039-17051.
[11] Angrisani L,Bonavolonta F,Schiano Lo Moriello R,et al.First steps towards innovative compressive sampling based-THz imaging system for early crack aerospace plates[C]//2014 IEEE Metrology for Aerospace,May 29-30,2014,Benevento,Italy.New York:IEEE,2014:488-493.
[12] Jansen C,Wietzke S,Wang H Y,et al.Terahertz spectroscopy on adhesive bonds[J].Polymer Testing,2011,30(1):150-154.
[13] Ospald F,Zouaghi W,Beigang R,et al.Aeronautics composite material inspection with a terahertz time-domain spectroscopy system[J].Optical Engineering,2014,53(3):031208.
[14] Liao X L,Wang Q,Gu X H,et al.Nondestructive inspection of carbon fiber composite materials based on THz-TDS[J].Laser & Infrared,2015,45(10):1255-1260.廖晓玲,王强,谷小红,等.基于THz-TDS的碳纤维复合材料无损检测[J].激光与红外,2015,45(10):1255-1260.
[15] Guo X D,Wang Q,Gu X H,et al.Analysis of terahertz spectroscopic inspection experiment for glass fiber composite material defects[J].Infrared Technology,2015,37(9):764-768.郭小弟,王强,谷小红,等.玻璃纤维复合材料缺陷的太赫兹光谱检测实验分析[J].红外技术,2015,37(9):764-768.
[16] Chen S G,Hou L,Lou X,et al.Investigation of terahertz continuous wave imaging and pulse wave imaging[J].Journal of Xi′an University of Technology,2013,29(2):127-132.陈素果,侯磊,楼骁,等.太赫兹波脉冲成像和连续波成像技术研究[J].西安理工大学学报,2013,29(2):127-132.
[17] Dorney T D,Baraniuk R G,Mittleman D M.Material parameter estimation with terahertz time-domain spectroscopy[J].Journal of the Optical Society of America A,2001,18(7):1562-1571.
[18] Duvillaret L,Garet F,Coutaz J L.A reliable method for extraction of material parameters in terahertz time-domain spectroscopy[J].IEEE Journal of Selected Topics in Quantum Electronics,1996,2(3):739-746.
[19] Wang H X,Shen L,Li C F,et al.Analysis and experimental investigation of laser induced damage of optics[J].Chinese Journal of Lasers,2017,44(3):0302006 王洪祥,沈璐,李成福,等.光学元件激光诱导损伤分析及实验研究[J].中国激光,2017,44(3):0302006
[20] Zhou X,Deng H,Luo Z F,et al.Study of transmission characteristics of water vapor based on terahertz time-domain spectroscopy[J].Infrared,2013,34(6):20-24.周逊,邓琥,罗振飞,等.基于太赫兹时域光谱技术的水蒸气传输特性研究[J].红外,2013,34(6):20-24.
[21] Li J,Deng Q C,Xiong L.Transmission characteristics of terahertz wave in water vapor transmitted 0.6 m[J].Laser & Optoelectronics Progress,2018,55(9):090101 李进,刘泉澄,熊亮.水蒸气中太赫兹波0.6 m行程下的传输特性[J].激光与光电子学进展,2018,55(9):090101.
[22] Liu H J,Wang F R,Luo Q,et al.Experimental comparison of damage performance induced by nanosecond 1ω laser between K9 and fused silica optics[J].Acta Physica Sinica,2012,61(7):076103.刘红婕,王凤蕊,罗青,等.K9和熔石英玻璃纳秒基频激光损伤特性的实验对比研究[J].物理学报,2012,61(7):076103.
[23] Li J.Studies on the terahertz time-domain spectroscopy signal analysis and substance identification methods based on the geometric algebra[D].Xi′an:Xidian University,2012:40-42.李静.基于几何代数的太赫兹时域光谱信号分析及物质识别方法研究[D].西安:西安电子科技大学,2012:40-42.
[24] Wang L.Terahertz radiation generation,detection,and terahertz time domain spectroscopy of molecules and solids[D].Changchun:Jilin University,2008:49-51.王琳.太赫兹辐射的产生、探测及一些分子和固体的太赫兹时域光谱[D].长春:吉林大学,2008:49-51.
[25] Qiu R.Research of high-power laser-induced damage of optical elements[D].Sichuan:China Academy of Engineering Physics,2013:30-32.邱荣.强激光诱导光学元件损伤的研究[D].四川:中国工程物理研究院,2013:30-32.
[2] Zhou Q,Wang J B,Qiu R,et al.Ultra-fast diagnosis of nanosecond laser induced fused silica damage[J].Chinese Journal of Lasers,2014,41(3):0303003.周强,王俊波,邱荣,等.纳秒激光诱导熔石英玻璃损伤的超快诊断[J].中国激光,2014,41(3):0303003.
[3] Shan C,Zhao Y A,Zhang X H,et al.Study on laser damage threshold of optical element surface based on Gaussian pulsed laser spatial resolution[J].Chinese Journal of Lasers,2018,45(1):0104002.单翀,赵元安,张喜和,等.基于高斯脉冲激光空间分辨测量光学元件表面激光损伤阈值研究[J].中国激光,2018,45(1):0104002.
[4] Su J H,Wang K K,Liang H F.Acoustic detection method of optical thin film damage based on frequency characteristics[J].High Power Laser and Particle Beams,2014,26(7):22-26.苏俊宏,王坤坤,梁海锋.基于频率特征的薄膜损伤声学判别方法[J].强激光与粒子束,2014,26(7):22-26.
[5] Zhao K,Zhan H L.Terahertz spectrum analysis technology[M].Beijing:Science Press,2017:4-6.赵昆,詹洪磊.太赫兹光谱分析技术[M].北京:科学出版社,2017:4-6.
[6] Yan Z J,Shi W,Hou L,et al.Investigation of aging effects in cross-linked polyethylene insulated cable using terahertz waves[J].Materials Research Express,2017,4(1):015304.
[7] Ma F Y,Chi Q,Su J P,et al.Study on the optical properties of ultra-thin metal films in the THz band[J].Spectroscopy and Spectral Analysis,2012,32(3):610-613.马凤英,池泉,苏建坡,等.超薄金属膜在太赫兹波段的光学特性研究[J].光谱学与光谱分析,2012,32(3):610-613.
[8] Grischkowsky D,Keiding S,van Exter M,et al.Far-infrared time-domain spectroscopy with terahertz beams of dielectrics and semiconductors[J].Journal of the Optical Society of America B,1990,7(10):2006-2015.
[9] Naftaly M,Miles R E.Terahertz time-domain spectroscopy of silicate glasses and the relationship to material properties[J].Journal of Applied Physics,2007,102(4):043517.
[10] Stoik C D,Bohn M J,Blackshire J L.Nondestructive evaluation of aircraft composites using transmissive terahertz time domain spectroscopy[J].Optics Express,2008,16(21):17039-17051.
[11] Angrisani L,Bonavolonta F,Schiano Lo Moriello R,et al.First steps towards innovative compressive sampling based-THz imaging system for early crack aerospace plates[C]//2014 IEEE Metrology for Aerospace,May 29-30,2014,Benevento,Italy.New York:IEEE,2014:488-493.
[12] Jansen C,Wietzke S,Wang H Y,et al.Terahertz spectroscopy on adhesive bonds[J].Polymer Testing,2011,30(1):150-154.
[13] Ospald F,Zouaghi W,Beigang R,et al.Aeronautics composite material inspection with a terahertz time-domain spectroscopy system[J].Optical Engineering,2014,53(3):031208.
[14] Liao X L,Wang Q,Gu X H,et al.Nondestructive inspection of carbon fiber composite materials based on THz-TDS[J].Laser & Infrared,2015,45(10):1255-1260.廖晓玲,王强,谷小红,等.基于THz-TDS的碳纤维复合材料无损检测[J].激光与红外,2015,45(10):1255-1260.
[15] Guo X D,Wang Q,Gu X H,et al.Analysis of terahertz spectroscopic inspection experiment for glass fiber composite material defects[J].Infrared Technology,2015,37(9):764-768.郭小弟,王强,谷小红,等.玻璃纤维复合材料缺陷的太赫兹光谱检测实验分析[J].红外技术,2015,37(9):764-768.
[16] Chen S G,Hou L,Lou X,et al.Investigation of terahertz continuous wave imaging and pulse wave imaging[J].Journal of Xi′an University of Technology,2013,29(2):127-132.陈素果,侯磊,楼骁,等.太赫兹波脉冲成像和连续波成像技术研究[J].西安理工大学学报,2013,29(2):127-132.
[17] Dorney T D,Baraniuk R G,Mittleman D M.Material parameter estimation with terahertz time-domain spectroscopy[J].Journal of the Optical Society of America A,2001,18(7):1562-1571.
[18] Duvillaret L,Garet F,Coutaz J L.A reliable method for extraction of material parameters in terahertz time-domain spectroscopy[J].IEEE Journal of Selected Topics in Quantum Electronics,1996,2(3):739-746.
[19] Wang H X,Shen L,Li C F,et al.Analysis and experimental investigation of laser induced damage of optics[J].Chinese Journal of Lasers,2017,44(3):0302006 王洪祥,沈璐,李成福,等.光学元件激光诱导损伤分析及实验研究[J].中国激光,2017,44(3):0302006
[20] Zhou X,Deng H,Luo Z F,et al.Study of transmission characteristics of water vapor based on terahertz time-domain spectroscopy[J].Infrared,2013,34(6):20-24.周逊,邓琥,罗振飞,等.基于太赫兹时域光谱技术的水蒸气传输特性研究[J].红外,2013,34(6):20-24.
[21] Li J,Deng Q C,Xiong L.Transmission characteristics of terahertz wave in water vapor transmitted 0.6 m[J].Laser & Optoelectronics Progress,2018,55(9):090101 李进,刘泉澄,熊亮.水蒸气中太赫兹波0.6 m行程下的传输特性[J].激光与光电子学进展,2018,55(9):090101.
[22] Liu H J,Wang F R,Luo Q,et al.Experimental comparison of damage performance induced by nanosecond 1ω laser between K9 and fused silica optics[J].Acta Physica Sinica,2012,61(7):076103.刘红婕,王凤蕊,罗青,等.K9和熔石英玻璃纳秒基频激光损伤特性的实验对比研究[J].物理学报,2012,61(7):076103.
[23] Li J.Studies on the terahertz time-domain spectroscopy signal analysis and substance identification methods based on the geometric algebra[D].Xi′an:Xidian University,2012:40-42.李静.基于几何代数的太赫兹时域光谱信号分析及物质识别方法研究[D].西安:西安电子科技大学,2012:40-42.
[24] Wang L.Terahertz radiation generation,detection,and terahertz time domain spectroscopy of molecules and solids[D].Changchun:Jilin University,2008:49-51.王琳.太赫兹辐射的产生、探测及一些分子和固体的太赫兹时域光谱[D].长春:吉林大学,2008:49-51.
[25] Qiu R.Research of high-power laser-induced damage of optical elements[D].Sichuan:China Academy of Engineering Physics,2013:30-32.邱荣.强激光诱导光学元件损伤的研究[D].四川:中国工程物理研究院,2013:30-32.