International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference最新文献_第9页

Beam nonuniformity compensating by the programmable spatial shaper for the integration test bed 集成试验台可编程空间成形器补偿光束非均匀性

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2019-01-24 DOI: 10.1117/12.2524006

Junpu Zhao, Yue-kun Liang, Sen Li, Zhaoyu Zong, Jun Tang, Wen-yi Wang, Ping Li, R. Zhao, F. Zeng, Yan-wen Xia, Lin Chen, Bo Chen, K. Zheng, Xiaofeng Wei, Qihua Zhu

{"title":"Beam nonuniformity compensating by the programmable spatial shaper for the integration test bed","authors":"Junpu Zhao, Yue-kun Liang, Sen Li, Zhaoyu Zong, Jun Tang, Wen-yi Wang, Ping Li, R. Zhao, F. Zeng, Yan-wen Xia, Lin Chen, Bo Chen, K. Zheng, Xiaofeng Wei, Qihua Zhu","doi":"10.1117/12.2524006","DOIUrl":"https://doi.org/10.1117/12.2524006","url":null,"abstract":"Microfluidic chips and microreactors have been widely used in various fields due to their low reagent consumption, fast reaction speed and good safety. Besides, temperature is the key parameter of many biochemical reactions. So it is important for the creation of temperature controllable micro-reactor. However, There are some problems in existing micro-reactors, such as structure, size, temperature control method and temperature distribution. Here we report a method based on an improved femtosecond laser wet etching technology and metal-microsolidifying process for the fabrication of microchannel and 3D microcoils inside fused silica. Based on this approach, we fabricate a temperature controllable micro-reactor used for polymerase chain reaction (PCR) by integrating 3D metallic microcoils and microfluidic channel twined by microcoils inside fused silica. We precisely and conveniently get required temperature by varying the voltage of microcoils. The micro-reactor also exhibits a high integration level and good uniformity of temperature distribution. In addition, we get a miniaturized device which can be conveniently integrated.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"11052 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130515447","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

Light field Fourier ptychographic microscopy 光场傅立叶显微术

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2019-01-24 DOI: 10.1117/12.2522600

Ming Li, Yicheng Li, Ling Zhong, R. Wen, C. Kuang, Haifeng Li

引用次数: 0

A high integration 3D temperature controllable micro-reactor fabricated by femtosecond laser wet etching 飞秒激光湿法刻蚀制备高集成度三维温度可控微反应器

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2019-01-24 DOI: 10.1117/12.2520702

S. Zheng, Qing Yang, Chao Shan, Jinwei Duan, Feng Chen, X. Hou

{"title":"A high integration 3D temperature controllable micro-reactor fabricated by femtosecond laser wet etching","authors":"S. Zheng, Qing Yang, Chao Shan, Jinwei Duan, Feng Chen, X. Hou","doi":"10.1117/12.2520702","DOIUrl":"https://doi.org/10.1117/12.2520702","url":null,"abstract":"Microfluidic chips and microreactors have been widely used in various fields due to their low reagent consumption, fast reaction speed and good safety. Besides, temperature is the key parameter of many biochemical reactions. So it is important for the creation of temperature controllable micro-reactor. However, There are some problems in existing micro-reactors, such as structure, size, temperature control method and temperature distribution. Here we report a method based on an improved femtosecond laser wet etching technology and metal-microsolidifying process for the fabrication of microchannel and 3D microcoils inside fused silica. Based on this approach, we fabricate a temperature controllable micro-reactor used for polymerase chain reaction (PCR) by integrating 3D metallic microcoils and microfluidic channel twined by microcoils inside fused silica. We precisely and conveniently get required temperature by varying the voltage of microcoils. The micro-reactor also exhibits a high integration level and good uniformity of temperature distribution. In addition, we get a miniaturized device which can be conveniently integrated.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131683037","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

Defect scattering microscopic imaging based on light source characteristics 基于光源特性的缺陷散射显微成像

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2019-01-24 DOI: 10.1117/12.2523359

Fei Yang, A. Gao, Weiguo Liu, Wengang Qin

{"title":"Defect scattering microscopic imaging based on light source characteristics","authors":"Fei Yang, A. Gao, Weiguo Liu, Wengang Qin","doi":"10.1117/12.2523359","DOIUrl":"https://doi.org/10.1117/12.2523359","url":null,"abstract":"The scattering of defects on the surface of the mirror directly affects the performance and accuracy of the optical testing system. The scattering of the surface defect of the mirror can be detected by the laser scattering microscope. In order to ensure the detection efficiency and precision of the whole system, the microlens lens, the size of the spot and the power spectrum response of CCD are designed in the design of the hardware system. secondly, the laser scattering microscopic imaging test system is programmed on the software system, which can use the stepping motor to scan the surface of the mirror, and control the image acquisition card to capture the image and display it visually; To obtain the scattering image of defects, it is necessary to study the laser scattering laws of various types of defects, and to select a reasonable microscopic imaging Scattering theory for a specific type of defects. focusing on the effects of different incident angles of light sources and scattered light at different angles of the same incident angle on the imaging quality of defects, and the relationship between laser irradiation and smear scattered light imaging in the spatial domain is obtained. A high-quality plaque scattering image lays a solid foundation.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124376970","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 status of optical phased array beam steering technology 光相控阵光束导向技术的发展现状

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2019-01-24 DOI: 10.1117/12.2523759

Qifeng Niu, Chunyang Wang, Hongwei Shi, Lan-ting Li, Dasen Wang

引用次数: 6

Theoretical and experimental research on Ce:YAG crystals for use in blue laser diode illumination 蓝色激光二极管照明用Ce:YAG晶体的理论与实验研究

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2019-01-24 DOI: 10.1117/12.2523242

Ming Zhao, Congcong Wang, Zhiyong Wang, You-qiang Liu

{"title":"Theoretical and experimental research on Ce:YAG crystals for use in blue laser diode illumination","authors":"Ming Zhao, Congcong Wang, Zhiyong Wang, You-qiang Liu","doi":"10.1117/12.2523242","DOIUrl":"https://doi.org/10.1117/12.2523242","url":null,"abstract":"The blue laser diode (LD) illuminator in this study was composed of a cerium doped yttrium aluminum garnet (Ce:YAG) crystal, a 450-nm laser diode and an optical fiber. After a first-principles calculation, the energy gap of the Ce:YAG crystal was found to be 4.71 eV, which was less than that of the YAG. The luminescent properties of the Ce:YAG were determined by the electronic distribution of the Ce (d) and Ce (f) orbits. The Ce:YAG crystal had two characteristic absorption peaks of Ce3+ at 332 nm and 455 nm. Hence, the 450-nm LD excited fluorescence spectra of a Ce:YAG crystal can be used for laser illumination. We discovered that the luminous efficiency of the LD increased with increasing color temperature for 4000 K, 5000 K, 6000 K and 6500 K but not for 3500 K, due to the low light transmittance of the thickest Ce:YAG crystal. The highest color-rendering index was about 70.0. Also, the blue laser without the 430-nm light from spectral radiance was, compared to an LED, a more serious eye hazard. We calculated that the permissible exposure time of the LD was longer than that of an LED. We also discovered that LD illumination is more secure than LED illumination.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132975167","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

Tuning localized surface resonances in graphene based Au nanosphere dimer antenna 石墨烯基金纳米球二聚体天线的局部表面共振调谐

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2019-01-24 DOI: 10.1117/12.2522151

Huanrong Fan, G. Du, Dayantha Lankanath, Qing Yang, Feng Liu, Yanhong Dong, Feng Chen, Noor Uddin, X. Hou

引用次数: 0

Enhanced schlieren imaging applied in heat and air jet visualizations: a wave propagation-based model 增强型纹影成像在热和空气射流可视化中的应用:基于波传播的模型

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2019-01-24 DOI: 10.1117/12.2523886

G. M. Oca, P. Almoro

{"title":"Enhanced schlieren imaging applied in heat and air jet visualizations: a wave propagation-based model","authors":"G. M. Oca, P. Almoro","doi":"10.1117/12.2523886","DOIUrl":"https://doi.org/10.1117/12.2523886","url":null,"abstract":"Refractive index variations caused by temperature or pressure gradients in transparent fluids are invisible to the naked eye. Schlieren effect reveals this variation using refraction and the knife-edge method. High contrast schlieren images are important in the analyses of fluid flow, gas density, shockwaves, heat transfer, flames, ballistics, leak detection and other applications. The neglect of physical or wave theory in schlieren technique leads to erroneous results in some circumstance. Specifically, a study had mathematically shown that illumination is fairly uniform over large part of the field but suddenly increases at the edge and is fairly appreciable for some way outside the actual physical boundary of the aperture. This bright edge is noticeable in all schlieren systems whereas a geometrical optics would lead to a uniformly illuminated field. Geometric ray-tracing codes are useful for optical design, but they cannot describe the key role of diffraction in the formation of schlieren image. In this study, a wave propagation-based model of the schlieren technique is proposed. Compared to the ray optics approach, the proposed model provides valuable insights and visualization of fluid flow dynamics. Some predictions of the model will be confirmed through experimental demonstrations. Setup parameters are also optimized resulting in enhanced resolution of schlieren images.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"105 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122633653","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

Strip-based parallel beam projection model for under-sampling CT system 欠采样CT系统中基于条带的平行光束投影模型

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2019-01-24 DOI: 10.1117/12.2522039

Shuang Zhang, Jinbang Wang, Hanxue Mei, P. Zhou, K. Pan, Zhiguo Liu, Yude Li, T. Sun

引用次数: 0

Athermalization for the supporting structure of space camera primary and secondary mirrors 空间相机主副镜支撑结构的热化

International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference Pub Date : 2019-01-24 DOI: 10.1117/12.2521897

Shangmin Lin, Hu Wang, Yang Liu, Yaoke Xue, B. Xiang, Jie Liu, Yongjie Xie, Meiying Liu, Liquan Wu

{"title":"Athermalization for the supporting structure of space camera primary and secondary mirrors","authors":"Shangmin Lin, Hu Wang, Yang Liu, Yaoke Xue, B. Xiang, Jie Liu, Yongjie Xie, Meiying Liu, Liquan Wu","doi":"10.1117/12.2521897","DOIUrl":"https://doi.org/10.1117/12.2521897","url":null,"abstract":"In order to meet the requirements of high-precision alignment of primary and secondary mirrors of space camera in thermal environment, we develop a new supporting structure which can eliminate heat affect between mirrors automatically. Through the simulation analysis, we have verified this structural design is feasible. According to requirements of the optical system, an integrated machining scheme with three-bar supporting structure for the secondary mirror is proposed. The automatic athermalization of the primary and secondary mirrors supporting structure is confirmed by structural analysis and optimization. The displacement between the primary mirror and secondary mirrors in the thermal environment range of -20° ~ +60°C is analyzed by using the PATRAN software, and the results show the position change is within 0.01mm. The structural size of the secondary mirror supporting cylinder is optimized, and the effect of stray light suppression for the multilayer sleeve visor is analyzed and verified by using the TRACEPRO software. The results show that the proposed structural design can achieve the high stability of the primary and secondary mirrors supporting structure and the good effect of stray light suppression.","PeriodicalId":370739,"journal":{"name":"International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference","volume":"430 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133849746","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