International Symposium on Laser Interaction with Matter最新文献

On-line measurement of kerosene pyrolysis gas based on TDLAS technology 基于TDLAS技术的煤油热解气体在线测量

International Symposium on Laser Interaction with Matter Pub Date : 2022-12-22 DOI: 10.1117/12.2656335

Jianyu Guo, Wei Rao, Jun-ling Song

{"title":"On-line measurement of kerosene pyrolysis gas based on TDLAS technology","authors":"Jianyu Guo, Wei Rao, Jun-ling Song","doi":"10.1117/12.2656335","DOIUrl":"https://doi.org/10.1117/12.2656335","url":null,"abstract":"Accurate measurement of the kerosene pyrolysis content is of great significance to study the supersonic combustion and active cooling of supersonic engine scramjet. Methane (CH4) and ethylene (C2H4) are two main gas products of the kerosene pyrolysis. In this paper, TDLAS technology is used to study the synchronous measurement methods of these two gas products in near infrared region. A kerosene pyrolysis gas simulation system was constructed with pure CH4, C2H4, nitrogen (N2) cylinders and gas mass flowmeters. A set of measurement system was built by distributed feedback laser (DFB) and Herriott gas cell with an optical path of 10.5m. The absorption spectrums are selected as 1.653μm for CH4 and 1.626μm for C2H4. Five groups of mixed gas with different CH4 and C2H4 concentrations between 0.5% to 3% was measured in the Herriott gas cell. The experimental results show that all the relative errors of the measured CH4 and C2H4 concentrations are within 3.3%, which illustrated the measurement equipment and method used in this paper have high accuracy and reliability. This study provides effective experience for further on-line measurement of kerosene pyrolysis gas using off-axis integral cavity output spectroscopy (OA-ICOS).","PeriodicalId":217394,"journal":{"name":"International Symposium on Laser Interaction with Matter","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114670135","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

The acceleration phenomenon of shock wave induced by millisecond-nanosecond combined-pulse laser on silicon 毫秒-纳秒联合脉冲激光在硅上产生的激波加速现象

International Symposium on Laser Interaction with Matter Pub Date : 2022-12-22 DOI: 10.1117/12.2656017

Jing-yi Li, Yahui Li, Chen Zhao, W. Zhang, Guangyong Jin

引用次数: 0

Investigation of a new kind of gas-flowing diode pumped cesium laser 一种新型气体流动二极管泵浦铯激光器的研究

International Symposium on Laser Interaction with Matter Pub Date : 2022-12-22 DOI: 10.1117/12.2656451

G. An, Jiao Yang, Jiawei Guo, H. Cai, Qing Luo, You Wang

引用次数: 0

Plasma plume characteristics of an aluminum target irradiated by a nanosecond pulsed laser with oblique incidence 纳秒斜入射脉冲激光照射铝靶的等离子体羽流特性

International Symposium on Laser Interaction with Matter Pub Date : 2022-12-22 DOI: 10.1117/12.2656202

Chenghao Yu, Jifei Ye, Weijing Zhou, Hao Chang, Xiao Han, Luyun Jiang

{"title":"Plasma plume characteristics of an aluminum target irradiated by a nanosecond pulsed laser with oblique incidence","authors":"Chenghao Yu, Jifei Ye, Weijing Zhou, Hao Chang, Xiao Han, Luyun Jiang","doi":"10.1117/12.2656202","DOIUrl":"https://doi.org/10.1117/12.2656202","url":null,"abstract":"The incidence angle of the pulsed laser has a significant influence on the performance of laser propulsion. To further reveal the impulse coupling mechanism when the pulsed laser is obliquely incident irradiated, a plume observation system with high spatial and temporal resolution and a plasma plume emission spectrometry system were designed and built. In this paper, time-resolved images and the plasma emission spectrum were investigated for pulsed laser irradiation of aluminum targets at 0°, 15°, 30°, 45°, 60°, and 75° in a vacuum environment. The results of the study show that the plasma plume is always ejected along with the normal phase of the target surface. Additionally, the electron number density, the plume radiation intensity, and the plasma temperature weaken as the angle of incidence increases. Besides, a high-precision three-dimensional spectral collection platform was built to finely study the two-dimensional spatial distribution of the plasma parameters in the flow field. The results show that the electron number density decreases rapidly with increasing distance from the target surface. In conclusion, the foundation is established for the analysis of the impulse coupling mechanism of pulsed laser oblique incidence.","PeriodicalId":217394,"journal":{"name":"International Symposium on Laser Interaction with Matter","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124766543","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

64 kW-peak-power eye-safe laser with high average power, tunable repetition rate and short pulse width for Lidar 64千瓦的峰值功率眼睛安全激光器，具有高平均功率，可调的重复率和激光雷达的短脉冲宽度

International Symposium on Laser Interaction with Matter Pub Date : 2022-12-22 DOI: 10.1117/12.2656195

Juntao Tian, Zhiyong Li, Rongqing Tan, Lili Zhao, Songyang Liu, Jinzhou Bai, Wenning Xu

引用次数: 0

Analysis of the damage mechanism of gray point induced by 800 nm femtosecond laser pulse on IT-CCD camera 800 nm飞秒激光脉冲对IT-CCD相机造成灰点损伤机理分析

International Symposium on Laser Interaction with Matter Pub Date : 2022-12-22 DOI: 10.1117/12.2656210

Yu-bin Shi, Jianming Zhang, Wangqi Xue, Zuodong Xu, Yunpeng Li, Pengcheng Dou, Guo-bin Feng

{"title":"Analysis of the damage mechanism of gray point induced by 800 nm femtosecond laser pulse on IT-CCD camera","authors":"Yu-bin Shi, Jianming Zhang, Wangqi Xue, Zuodong Xu, Yunpeng Li, Pengcheng Dou, Guo-bin Feng","doi":"10.1117/12.2656210","DOIUrl":"https://doi.org/10.1117/12.2656210","url":null,"abstract":"As located in the focal plane of the imaging system, the image sensor will be easily influenced by the huge optical gain, which is brought in the image sensor by the external optical system and microlens on the surface of the device. Laser has a great influence on the image sensor, which is a sensitive link of the anti-laser reinforcement of the imaging system. Improving the performance in extreme light conditions in order to study the vulnerability of image has an important significance of reinforcement. As a typical visible light image sensor, which has advantages of sensitivity, high dynamic, small, light and so on, IT-CCD has been widely used in the fields of reconnaissance, detection and military. An 800nm femtosecond pulse laser was used to carry out experimental research on the laser irradiation effect of IT-CCD. The results shown that the local pixel of IT-CCD was in a state between undamaged and the white point damaged after irradiating by the laser, which was named by gray point. It was shown that the influenced pixels of IT CCD were changed by the laser, but no obvious deformation occurred. Through microscopic detection and analysis, the damage mechanism was expounded, further analysis was done. With focus ion beam (FIB) technique, it was found that there was photosensitive potential well, micro-structure of SiNx filling layer under microlens of the IT-CCD. When the gray point damage occurred, neither the photosensitive potential well at the bottom of the device was damaged, nor was the microlens structure on the surface. It turned out that the SiNx filling layer was influenced by the laser. Through elucidating the mechanism of this damage of the gray point, it lays a foundation for damage mechanism research.","PeriodicalId":217394,"journal":{"name":"International Symposium on Laser Interaction with Matter","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129112538","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

An accurate extraction method of HTV signal based on Hessian matrix optimization algorithm 基于Hessian矩阵优化算法的HTV信号精确提取方法

International Symposium on Laser Interaction with Matter Pub Date : 2022-12-22 DOI: 10.1117/12.2657129

J. Shao, Jing Ye, Zheng-rong Zhang, Li-jun Wang, Aiping Yi, Guohua Li, Mengmeng Tao, Zhenjie Wu, Ke Wang

引用次数: 0

Temperature measurement of swirling flames using near-infrared emission spectroscopy of H2O 利用水的近红外发射光谱测量旋转火焰的温度

International Symposium on Laser Interaction with Matter Pub Date : 2022-12-22 DOI: 10.1117/12.2655917

G. Zhou, Fei Li, Xin Lin, Dongdong Meng, Xilong Yu

引用次数: 0

Effect of multiple pulsed laser irradiation on resistance of silicon cells 多次脉冲激光辐照对硅电池电阻的影响

International Symposium on Laser Interaction with Matter Pub Date : 2022-12-22 DOI: 10.1117/12.2656268

Longcheng Huang, Jifei Ye, Sai Li, Lan Li, Diankai Wang

{"title":"Effect of multiple pulsed laser irradiation on resistance of silicon cells","authors":"Longcheng Huang, Jifei Ye, Sai Li, Lan Li, Diankai Wang","doi":"10.1117/12.2656268","DOIUrl":"https://doi.org/10.1117/12.2656268","url":null,"abstract":"Laser as a high energy density light source and silicon cell as a widely used photoelectric conversion element, the interaction between the two has become a research hotspot in wireless energy transmission and semiconductor material damage. At present, the experimental and theoretical research mainly focuses on the damage threshold and morphology, electrical output characteristics and action mechanism. The resistance of the silicon cell affecting electrical output was mainly qualitative analysis, but few quantitative studies. Different degrees of damage were simulated though pulsed laser irradiation in different positions of the silicon cell. The parallel resistance and series resistance of the silicon cell were estimated by linear fitting at V0 and I0 of IV curve, and the variation of the resistances was quantitatively obtained under different degrees damage. The results show that the damage induced by pulsed laser irradiation is obvious melting ablation and the damage is irreversible when the optical power density is 3.3×108W / cm2 , one pulse irradiation damage is equivalent to the resistances of 67 in parallel and 189 m in series for silicon cell, the output voltage decreases approximately linearly with the increase of irradiation times and the output voltage is about half of the initial voltage after 6 times irradiation. In addition, the output voltage was rapidly increased to a peak with the loading of pulsed laser, which is almost independent of the damage of the silicon cell.","PeriodicalId":217394,"journal":{"name":"International Symposium on Laser Interaction with Matter","volume":"207 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115595301","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

Mechanisms of combined laser on damage effectiveness 复合激光对损伤效能的影响机制

International Symposium on Laser Interaction with Matter Pub Date : 2022-12-22 DOI: 10.1117/12.2656298

T. Ma, Wu Yuan, Ho-Seon Song, Ruixing Wang

引用次数: 0