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SPIE/SIOM Pacific Rim Laser Damage最新文献

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Research status and analysis of fifth-harmonic-generation for ~1μm laser ~1μm激光器五次谐波产生的研究现状及分析
SPIE/SIOM Pacific Rim Laser Damage Pub Date : 2019-07-08 DOI: 10.1117/12.2540085
Yuanyuan Fan, Xin Guo, Qian Wang, W. Deng, Boxia Yan, Yan Qi, Yi Zhou
{"title":"Research status and analysis of fifth-harmonic-generation for ~1μm laser","authors":"Yuanyuan Fan, Xin Guo, Qian Wang, W. Deng, Boxia Yan, Yan Qi, Yi Zhou","doi":"10.1117/12.2540085","DOIUrl":"https://doi.org/10.1117/12.2540085","url":null,"abstract":"All-solid-state (ASS) ultraviolet (UV) laser is an organic combination of ASS laser technique and nonlinear frequency conversion technique. By using different kinds of nonlinear optical crystals and optimizing the system structure, the conversion efficiency and output power of fifth-harmonic-generation (5HG) of ASS lasers has been constantly updated. And the expected UV laser with high beam quality and stability was obtained through reasonable system design. In this paper, the research status of 5HG for ~1 μm near-infrared ASS lasers were briefly reviewed, different approaches for producing 5HG were compared, and the advantages and disadvantages of the corresponding approaches are analyzed.","PeriodicalId":197837,"journal":{"name":"SPIE/SIOM Pacific Rim Laser Damage","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121876467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhance anti-water ability of high transmittance film in mid-infrared band 提高中红外波段高透光膜的抗水能力
SPIE/SIOM Pacific Rim Laser Damage Pub Date : 2019-07-08 DOI: 10.1117/12.2538335
Xiuhua Fu, Gong Zhang, Jing Zhang
{"title":"Enhance anti-water ability of high transmittance film in mid-infrared band","authors":"Xiuhua Fu, Gong Zhang, Jing Zhang","doi":"10.1117/12.2538335","DOIUrl":"https://doi.org/10.1117/12.2538335","url":null,"abstract":"In order to obtain high-performance short-mid infrared anti-reflection membrane, Si, SiO, and MgF2 are used to design the system structure, in which MgF2 is located in the outermost layer and expose in the atmosphere. However, due to the porous structure of fluoride thin film, the peaking density of MgF2 film is low, which is prone to the moisture absorbing. The water vapor comes into the film not only caused the transmittance decrease but also lead to the poor adhesion. The excessive power of ion source assisted deposition increases the stress of MgF2 film, resulting in the stress mismatch between MgF2 film and the previous Si layer, caused the MgF2 film cracks. To improve the adhesion of the film, this paper invests a way to matching stress by plating bond layer between MgF2 and Si, and adopts the step annealing process combined with ion beam assisted deposition to improve the film aggregation density and decrease the absorption of water vapor, and further reduce the film stress. The spectral transmittance of prepared films is greater than 96% in1.5~5μm. After 7 days, the spectral transmittance decreased by only 0.6% and remained stable for the next 30 days. The prepared film with high quality can through 10 times adhesive test without fracture.","PeriodicalId":197837,"journal":{"name":"SPIE/SIOM Pacific Rim Laser Damage","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131049698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Photoelectric properties of transparent conductive metal mesh films based on crack template and its application in Perovskite solar cells 基于裂纹模板的透明导电金属网膜的光电性能及其在钙钛矿太阳能电池中的应用
SPIE/SIOM Pacific Rim Laser Damage Pub Date : 2019-07-08 DOI: 10.1117/12.2540113
Zonghu Xiao, W. Zhong, H. Ou, Haiyan Fu, Shunjian Xu, Yongping Luo
{"title":"Photoelectric properties of transparent conductive metal mesh films based on crack template and its application in Perovskite solar cells","authors":"Zonghu Xiao, W. Zhong, H. Ou, Haiyan Fu, Shunjian Xu, Yongping Luo","doi":"10.1117/12.2540113","DOIUrl":"https://doi.org/10.1117/12.2540113","url":null,"abstract":"A transparent conductive metal mesh film (TCMMF) was successfully fabricated by a low-cost and simple process. Firstly, the crack mask pattern is obtained after a certain heat treatment process, based on a glass substrate coated with egg-white. Then, a TCMMF was fabricated in combination with a series of processes such as metal deposition and mask removal. In this paper, the film formation mechanism and performance of the TCMMF based on random crack templates are studied, and the TCMMF have also been used in perovskite solar cells (PSCs).The results showed that the TCMMF’s transmittance is more than 90% in the UV-visible range and infrared-visible range. The TCMMF’s surface resistance measured by the four probe method is 20 Ω/□. The performance of the PSCs based on the TCMMF can be comparable to that of the PSCs based on ITO, with a photoelectric conversion efficiency of 13.8%. This provides a possibility for the application of TCMMF in photovoltaic and photovoltaic fields.","PeriodicalId":197837,"journal":{"name":"SPIE/SIOM Pacific Rim Laser Damage","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124501207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
The study on damage threshold of CCD’s black and white screen CCD黑白屏损伤阈值的研究
SPIE/SIOM Pacific Rim Laser Damage Pub Date : 2019-07-08 DOI: 10.1117/12.2539684
Y. Wang, Q. Chen, X. Zhou, H. Li, G. Ren, R. Zhu
{"title":"The study on damage threshold of CCD’s black and white screen","authors":"Y. Wang, Q. Chen, X. Zhou, H. Li, G. Ren, R. Zhu","doi":"10.1117/12.2539684","DOIUrl":"https://doi.org/10.1117/12.2539684","url":null,"abstract":"The damage threshold of CCD’s black and white screen has been effectively measured in this paper. The visible array CCD is a type of photoelectric detector used at the visible wavelengths. The black and white screen of visible array CCD had been observed when it was irradiated by 532nm pulsed laser with low repetition frequency and high energy from a distance of 30m. The measurement method was proposed for the damage threshold of laser power density at the photosensitive surface when the black and white screen came into being. The gain of optical system was firstly designed to measure as 4.4×103 by changing the repetition frequency of incident laser and adding the right attenuation slices in light path, and finally the damage threshold of CCD’s black and white screen was calculated as 4.5W/cm2. The research fruit can provide the theoretical basis and data reference for carrying out the jamming and blinding photoelectric detector of high power laser.","PeriodicalId":197837,"journal":{"name":"SPIE/SIOM Pacific Rim Laser Damage","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133472322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study on magnetic properties of oriented silicon steel scribed by ultrafast laser 超快激光刻蚀取向硅钢的磁性能研究
SPIE/SIOM Pacific Rim Laser Damage Pub Date : 2019-07-08 DOI: 10.1117/12.2540019
Zongwang Chen, Laixi Wu, Jian Zhang, Zhuoyuan Li, Lin Yang, Wenwen Liu
{"title":"Study on magnetic properties of oriented silicon steel scribed by ultrafast laser","authors":"Zongwang Chen, Laixi Wu, Jian Zhang, Zhuoyuan Li, Lin Yang, Wenwen Liu","doi":"10.1117/12.2540019","DOIUrl":"https://doi.org/10.1117/12.2540019","url":null,"abstract":"This paper aims at reducing iron loss of oriented silicon steel and improving its electromagnetic properties. The laser ablation was carried out with different scribe spacing by 532nm picosecond laser. The characteristics of ablation morphology and ablation mechanism were analyzed and discussed using 3D confocal microscope, SEM and EDS. Key magnetic parameters of oriented silicon steel such as relative permeability, dynamic hysteresis loop, and iron loss were measured using iron loss meter. The results show a regular and defect-free ablation morphology obtained by 532nm ultrafast laser, which has the characteristics of force effect damage. The performance improvement effect of silicon steel with the scribe spacing 3.5mm has been shown to be the best. The P1.5/50 and P1.7/50 decreased by 11.5% and 13.8% respectively, the peak of relative permeability increased by 13.6%, and the coercivity and loop area decreased by 12.3% and 11.9% respectively. The improvement of magnetic properties of silicon steel mainly depends on the domain structure and residual stress distribution.","PeriodicalId":197837,"journal":{"name":"SPIE/SIOM Pacific Rim Laser Damage","volume":"39 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131500519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preliminary application research of regression analysis in camouflage color matching 回归分析在迷彩配色中的初步应用研究
SPIE/SIOM Pacific Rim Laser Damage Pub Date : 2019-07-08 DOI: 10.1117/12.2538081
Ge Liu, Xiang Li, Hao Xu, Jianjun Ju, Heng Liu
{"title":"Preliminary application research of regression analysis in camouflage color matching","authors":"Ge Liu, Xiang Li, Hao Xu, Jianjun Ju, Heng Liu","doi":"10.1117/12.2538081","DOIUrl":"https://doi.org/10.1117/12.2538081","url":null,"abstract":"It is an important factor for affecting camouflage effects, but copying background color with empirical color matching has poor accuracy. This paper chose cadmium red, cadmium yellow and other colors basing on the performance requirements of same-color same-spectrum; prepared pastes and swatches with different grinding times particle sizes, were to measure their spectral reflection characteristics; then selected cadmium red, cadmium yellow and cobalt blue as the base pigments, which are roughly the same as the natural background-green in the infrared band spectral reflectance curve. Carried out a large number of experiments to prepare several green color samples from pale green, light green, medium green to blackish green and recorded the basic color ratio to construct a basic green pigment formula library according to the color reduction principle of color mixing. Respectively establish a mathematical model of the chromaticity values and the mass ratio of the yellow and blue base pigments, verify the model by using multiple nonlinear regression methods in SPSS, and verify the regression significant effect of the model built. Using the color-difference calculation formula, a nonlinear function model is established, and the minimum point of the function is found by MATLAB neural network genetic algorithm, and the mass ratio of the base pigment of the simulated background color is obtained. The results show that the spectral curve satisfies the requirement of the same-color same-spectrum compared to the background, which can meet the needs of camouflage color matching and provide a scheme for camouflage color matching automation and intelligent.","PeriodicalId":197837,"journal":{"name":"SPIE/SIOM Pacific Rim Laser Damage","volume":"78 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114151908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Energy flow difference structure design based on micro hemisphere structure 基于微半球结构的能流差结构设计
SPIE/SIOM Pacific Rim Laser Damage Pub Date : 2019-07-08 DOI: 10.1117/12.2539201
X. Fan, Kailiang Shi, Zhilin Xia
{"title":"Energy flow difference structure design based on micro hemisphere structure","authors":"X. Fan, Kailiang Shi, Zhilin Xia","doi":"10.1117/12.2539201","DOIUrl":"https://doi.org/10.1117/12.2539201","url":null,"abstract":"Currently, unidirectional energy flow films mainly rely on surface plasma polarization and photonic crystals, their working bands are narrow and they are mainly used in the field of optical communication. This paper simulates and optimizes an optical array film attached with a large number of micro hemispheres. When the parallel incident light is incident from the inner side of the film (A side) to the outer side (B side), most of the incident light can pass through the film to the outer side at different angles; when the parallel incident light is incident from the outer side to the inner side, a considerable portion of the incident light returns to the outer side when the incident angles are larger than 60°. Therefore, the film will generate energy flow difference. Although the energy flow difference cannot reach 100%, the working band of the film is relatively broad. In this paper, the height and refractive index of the micro hemisphere are continuously optimized, and the maximum energy flow difference reaches up to 97.5% at the angle of 80° eventually.","PeriodicalId":197837,"journal":{"name":"SPIE/SIOM Pacific Rim Laser Damage","volume":"164 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124673264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of transparent oxide thin films for flexible devices 柔性器件用透明氧化薄膜的研制
SPIE/SIOM Pacific Rim Laser Damage Pub Date : 2019-07-08 DOI: 10.1117/12.2539091
Yuanjie Li, Jie Wang, Wenci Sun, K. Jiang, Hong Wang
{"title":"Development of transparent oxide thin films for flexible devices","authors":"Yuanjie Li, Jie Wang, Wenci Sun, K. Jiang, Hong Wang","doi":"10.1117/12.2539091","DOIUrl":"https://doi.org/10.1117/12.2539091","url":null,"abstract":"In this work, the electrical conductivity of Ga-doped ZnO (GZO) films was discussed with varying sputtering powers for transparent electrodes. The dependence of the optical bandgap, Eopt, of the GZO films on sputtering power density was expressed by the Burstein-Moss shift model correlated with the carrier concentration in the GZO films. The lowest electrical resistivity of the GZO films was obtained to be 3×10-4 ohm-cm with carrier concentration of 9.2×1020 cm-3 and Hall mobility of 22 cm2 /Vs. Amorphous InGaZnO (a-IGZO) was developed by radio frequency magnetron sputtering as the active channel layer under different gas flow rates at room temperature. It is revealed that oxygen flow rate played an important role in controlling the conductance in the a-IGZO channel layer. The characteristics of the bottom-gate aIGZO thin film transistors exhibited the saturation field effect mobility of 15.5 cm2 /Vs with an on/off current ratio of 105 . The improvement of transistors performance from depletion to enhancement mode is attributed to depressing the carrier concentration to realize normally-off device characteristics.","PeriodicalId":197837,"journal":{"name":"SPIE/SIOM Pacific Rim Laser Damage","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121259728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thickness dependence of Cr-doped VO2 thin films deposition by reactive pulsed magnetron sputtering 反应脉冲磁控溅射沉积cr掺杂VO2薄膜的厚度依赖性
SPIE/SIOM Pacific Rim Laser Damage Pub Date : 2019-07-08 DOI: 10.1117/12.2540082
Huan Guan, Dong-ping Zhang, Jingcheng Jin, Y. Yang, Yi Huang, Q. He, P. Fan
{"title":"Thickness dependence of Cr-doped VO2 thin films deposition by reactive pulsed magnetron sputtering","authors":"Huan Guan, Dong-ping Zhang, Jingcheng Jin, Y. Yang, Yi Huang, Q. He, P. Fan","doi":"10.1117/12.2540082","DOIUrl":"https://doi.org/10.1117/12.2540082","url":null,"abstract":"Due to the interesting phase transition properties, Vanadium dioxide is a promising materials for smart windows. But phase transition temperature of 68° is high for this application. Doping is an useful method for transition temperature reducing in previous works. In this paper, different thickness VO2 films were prepared by reactive pulsed magnetron sputtering, and a novel doping method was employed to reduce transition temperature. The results of XRD, Raman, transmittance spectra, and thermal hysteresis reveal that the transition temperature of un-doped samples is about 54~58°, and the increasing of phase transition amplitude and optical transmittance in visible decreasing with film thickness was observed. While for doped samples, all the transition temperatures reduced below 37°. For the thin thickness 12.5nm and 25nm, which phase transition performance deteriorated seriously. The thickness 25nm deposited for 1.5 h has the optimal performance of high optical transmittance and high IR adjustment ability.","PeriodicalId":197837,"journal":{"name":"SPIE/SIOM Pacific Rim Laser Damage","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128518211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Analysis of optical damage in the final optics assembly induced by transport mirror defects 输运镜缺陷引起的最终光学组件光学损伤分析
SPIE/SIOM Pacific Rim Laser Damage Pub Date : 2019-07-08 DOI: 10.1117/12.2539204
Zhaoyang Jiao, Mingying Sun, Yajing Guo, Jianqiang Zhu
{"title":"Analysis of optical damage in the final optics assembly induced by transport mirror defects","authors":"Zhaoyang Jiao, Mingying Sun, Yajing Guo, Jianqiang Zhu","doi":"10.1117/12.2539204","DOIUrl":"https://doi.org/10.1117/12.2539204","url":null,"abstract":"Laser induced damage in the final optics assembly (FOA) is one of the bottleneck problems in high power laser systems for the inertial confinement fusion. In the online experiment, a correlation between the transport mirror defects and the optics damage in the final optics assembly has been found. A physical model is built to analyze the influence of defect size and modulation depth on the light intensification in the FOA. Basically, small size defect on the mirror has a tiny influence on the downstream modulation in the FOA. Optical propagation simulation is also carried out with the real defect phase information got from the interferometer. Results show that there could be strong light intensification caused by the upstream mirror defect. So the local high enough intensity is the main reason for the optics damage. The abnormal intensification is mainly caused by the irregular defect contour, which is produced in the laser induced damage process on the mirror. It is best to eliminate this kind of coating defect on the transport mirrors. When this kind of damaged defect on the transport mirror is inevitable, a mitigation strategy for the optics damage in the FOA is proposed. An inverse design of the best distance between the transport mirror and the FOA can be used to reduce the influence of the transport mirror defects on the downstream FOA. The study can provide some reference for the improvement of the damage resistance of final optics assembly in the high power laser facility.","PeriodicalId":197837,"journal":{"name":"SPIE/SIOM Pacific Rim Laser Damage","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125856132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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