Photoelectronic Technology Committee Conferences最新文献_第9页

Polarization of focal spot for high numerical aperture radially polarized beam 大数值孔径径向偏振光的焦斑偏振

Photoelectronic Technology Committee Conferences Pub Date : 2015-04-13 DOI: 10.1117/12.2182014

Yun Xiao, Yunhai Zhang, Jian Chang, Tongda Wei

{"title":"Polarization of focal spot for high numerical aperture radially polarized beam","authors":"Yun Xiao, Yunhai Zhang, Jian Chang, Tongda Wei","doi":"10.1117/12.2182014","DOIUrl":"https://doi.org/10.1117/12.2182014","url":null,"abstract":"According to Wolf and Richards vectorial diffraction theory, an electric field intensity model of focal spot for high numerical aperture radially polarized beam is established to analyze the intensity distributions of the focal spot and the polarization components of the electric field along the x, y and z axis, separately. In the reflection-mode confocal of imaging system, the intensity distributions of focal spot is obtained utilizing the gold nanoparticles, and the intensity distributions of the polarization components of the electric field along the x, y and z axis are obtained utilizing the gold nanorods. In the incident light, the polarization component along the z axis is nonexistent in front of the objective. But there is the polarization component along the z axis, which is relative to the numerical aperture, in the focal spot behind the objective. When the numerical aperture increases from 0.8 to 1.4, the ratio of the polarization component maximum along the z axis to that along the x axis or y axis increases from 0.57 to 3.16. The results show that the focal spot of radially polarized beam through high numerical aperture objective have the polarization component along the x, y and z axis, separately, and polarization component along z axis is much more than the other.","PeriodicalId":225534,"journal":{"name":"Photoelectronic Technology Committee Conferences","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125420948","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

Test and analysis of the infrared characteristic of the plume-smoke 烟柱红外特性的测试与分析

Photoelectronic Technology Committee Conferences Pub Date : 2015-04-13 DOI: 10.1117/12.2178618

Xiaolong Zhang, Guang Zhang, Dapeng Chen, Yanbing Dong

引用次数: 0

Research on mechanical vibration impacts of GaAs photocathode photoemission performance 机械振动对砷化镓光电阴极光电发射性能的影响研究

Photoelectronic Technology Committee Conferences Pub Date : 2015-04-13 DOI: 10.1117/12.2178699

F. Shi, Hongchang Cheng, Xiaofeng Bai, Lei Yan

引用次数: 0

A novel data transmission circuit for digital image sensors 一种新型数字图像传感器数据传输电路

Photoelectronic Technology Committee Conferences Pub Date : 2015-04-13 DOI: 10.1117/12.2179999

Jiqing Zhang, Zhengfen Li, Shengyou Zhong, L. Yao

{"title":"A novel data transmission circuit for digital image sensors","authors":"Jiqing Zhang, Zhengfen Li, Shengyou Zhong, L. Yao","doi":"10.1117/12.2179999","DOIUrl":"https://doi.org/10.1117/12.2179999","url":null,"abstract":"A novel data transmission circuit for digital image sensors is presented. Large amounts of data are divided into m groups of n bits each. Each group of data is stored in an n-bit shift register. Under the control of a column scanner, at a time, only one group of data is selected to output serially to a common output line. Thus, as the scanner scans all the groups of data, the large amounts of data are serially output through the common line. A current-mode circuit transforms the output data into a low voltage swing signal which propagates over the common output line fast. A sense amplifier receives the low voltage swing signal and then recovers the full swing signal. Finally, a low-voltage differential signaling ( LVDS ) transmitter, which is fed with the full swing signal, transmits the data out chip. Because there is always only one of the m shift registers operating, the power consumption is greatly reduced. The simulation results show that the proposed circuit works correctly at a date rate of 400Mb/s. For n=14, and m=8, 32, 128, and 256, the power consumption of the prototype is as low as 1/4, 1/15, 1/50, and 1/80 that of the traditional serial link respectively.","PeriodicalId":225534,"journal":{"name":"Photoelectronic Technology Committee Conferences","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127264353","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

Probability-based saliency detection approach for multi-features integration 基于概率的多特征融合显著性检测方法

Photoelectronic Technology Committee Conferences Pub Date : 2015-04-13 DOI: 10.1117/12.2182163

Jing Pan, Yuqing He, Qishen Zhang, Kun Huang

{"title":"Probability-based saliency detection approach for multi-features integration","authors":"Jing Pan, Yuqing He, Qishen Zhang, Kun Huang","doi":"10.1117/12.2182163","DOIUrl":"https://doi.org/10.1117/12.2182163","url":null,"abstract":"There are various saliency detection methods have been proposed recent years. These methods can often complement each other so combining them in appropriate way will be an effective solution of saliency analysis. Existing aggregation methods assigned weights to each entire saliency map, ignoring that features perform differently in certain parts of an image and their gaps between distinguishing the foreground from the backgrounds. In this work, we present a Bayesian probability based framework for multi-feature aggregation. We address saliency detection as a two-class classification problem. Saliency maps generated from each feature have been decomposed into pixels. By the statistic results of different saliency value’s reliability on foreground and background detection, we can generate an accurate, uniform and per-pixel saliency mask without any manual set parameters. This approach can significantly suppress feature’s misclassification while preserve their sensitivity on foreground or background. Experiment on public saliency benchmarks show that our method achieves equal or better results than all state-of-the-art approaches. A new dataset contains 1500 images with human labeled ground truth is also constructed.","PeriodicalId":225534,"journal":{"name":"Photoelectronic Technology Committee Conferences","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126646210","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

Analysis of system parameters for interferometric imaging spectrometer 干涉成像光谱仪系统参数分析

Photoelectronic Technology Committee Conferences Pub Date : 2015-04-13 DOI: 10.1117/12.2179847

Caixun Bai, Jianxin Li, Xin Meng, Yan Shen, R. Zhu

{"title":"Analysis of system parameters for interferometric imaging spectrometer","authors":"Caixun Bai, Jianxin Li, Xin Meng, Yan Shen, R. Zhu","doi":"10.1117/12.2179847","DOIUrl":"https://doi.org/10.1117/12.2179847","url":null,"abstract":"The technology of interferometric imaging spectrometer can detect spatial information and spectral information of targets simultaneously. It has been the research hotpot because of its advantages of high throughput, high spectral resolution, high spatial resolution and so on. In order to obtain the spectral images of scene at different distance, a system of interferometric imaging spectrometer is presented, which consists of two imaging lens, a collimating lens, a Sagnac transverse shearing splitter and a detector. Based on the analysis of the optical paths and structure of spectrometer, system parameters of interferometric imaging spectrometer were researched, especially the ones of the transverse shearing splitter, incident plane width, mirror offset, optical parallelism error, and the clear aperture of the imaging lens and collimating lens . Optimal system parameters were given by discussing the relationship of parameters including transverse shearing splitter, detection distance, imaging lens, collimating lens and detector. Experimental prototype is set up to verify the impact of the error of system parameters on the imaging properties.","PeriodicalId":225534,"journal":{"name":"Photoelectronic Technology Committee Conferences","volume":"9522 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129222360","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

Growth and photorefractive properties of Zr:Cu:Fe:LiNbO3 crystals with various Li/Nb ratios 不同Li/Nb比Zr:Cu:Fe:LiNbO3晶体的生长和光折变特性

Photoelectronic Technology Committee Conferences Pub Date : 2015-04-13 DOI: 10.1117/12.2181662

Xiaoling Zhang, Xin Zhang, J. Tong, Jie Gao, Lijie Jin, Zhaopeng Xu

引用次数: 0

Activation processes on GaAs photocathode by different currents of oxygen source 不同氧源电流对砷化镓光电阴极的活化过程

Photoelectronic Technology Committee Conferences Pub Date : 2015-04-13 DOI: 10.1117/12.2178708

Z. Miao, F. Shi, Hongchang Cheng, Shu-fei Wang, Xiao-hui Zhang, Yuan Yuan, Chang Chen

引用次数: 2

Fabrication of super-hydrophobic duo-structures 超疏水双结构的制备

Photoelectronic Technology Committee Conferences Pub Date : 2015-04-13 DOI: 10.1117/12.2184406

X. Zhang, F. Zhang, Y. Jiang, Y. Y. Wang, Z. Shi, C. Peng

{"title":"Fabrication of super-hydrophobic duo-structures","authors":"X. Zhang, F. Zhang, Y. Jiang, Y. Y. Wang, Z. Shi, C. Peng","doi":"10.1117/12.2184406","DOIUrl":"https://doi.org/10.1117/12.2184406","url":null,"abstract":"Recently, super-hydrophobicity has attracted increasing attention due to its huge potential in the practical applications. In this paper, we have presented a duo-structure of the combination of micro-dot-matrix and nano-candle-soot. Polydimethylsiloxane (PDMS) was used as a combination layer between the dot-matrix and the soot particles. Firstly, a period of 9-μm dot-matrix was easily fabricated on the K9 glass using the most simple and mature photolithography process. Secondly, the dot-matrix surface was coated by a thin film of PDMS (elastomer: hardener=10:1) which was diluted by methylbenzene at the volume ratio of 1:8. Thirdly, we held the PDMS modified surface over a candle flame to deposit a soot layer and followed by a gentle water-risen to remove the non-adhered particles. At last, the samples were baked at 85℃ for 2 hours and then the duo-structure surface with both micro-size dot-matrix and nano-size soot particles was obtained. The SEM indicated this novel surface morphology was quite like a lotus leaf of the well-know micro-nano-binary structures. As a result, the contact angle meter demonstrated such surface exhibited a perfect super-hydrophobicity with water contact angle of 153° and sliding angle of 3°. Besides, just listed as above, the fabrication process for our structure was quite more easy, smart and low-cost compared with the other production technique for super-hydrophobic surfaces such as the phase separation method, electrochemical deposition and chemical vapor deposition etc. Hence, this super-hydrophobic duo-structure reported in this letter was a great promising candidate for a wide and rapid commercialization in the future.","PeriodicalId":225534,"journal":{"name":"Photoelectronic Technology Committee Conferences","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134153484","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

Modeling and characteristic of the SMT Board Plug connector in high speed optical communication system 高速光通信系统中SMT板插拔连接器的建模与特性研究

Photoelectronic Technology Committee Conferences Pub Date : 2015-04-13 DOI: 10.1117/12.2179587

Haoran Wu, Zhenzhen Dong, Tanglin Wang, Heng Zhao, Junbo Feng, Naidi Cui, J. Teng, Jin Guo

{"title":"Modeling and characteristic of the SMT Board Plug connector in high speed optical communication system","authors":"Haoran Wu, Zhenzhen Dong, Tanglin Wang, Heng Zhao, Junbo Feng, Naidi Cui, J. Teng, Jin Guo","doi":"10.1117/12.2179587","DOIUrl":"https://doi.org/10.1117/12.2179587","url":null,"abstract":"Modeling and characteristic of the SMT Board Plug connector, which is used to connect micro optical transceiver to the main board, are proposed and analyzed in this paper. When the high speed signal transfers from the PCB of transceiver to main board through SMT Board Plug connector, the structure and material discontinuity of the connector causes insertion losses and impedance mismatches. This makes the performance of high speed digital system exacerbated. So it is essential to analyze the signal transfer characteristics of the connector and find out what factors affected the signal quality at the design stage of the digital system. To solve this problem, Ansoft's High Frequency Structure Simulator (HFSS), based on the finite element method, was employed to build accurate 3D models, analyze the effects of various structure parameters, and obtain the full-wave characteristics of the SMT Board Plug connectors in this paper. Then an equivalent circuit model was developed. The circuit parameters were extracted precisely in the frequency range of interests by using the curve fitting method in ADS software, and the result was in good agreement with HFSS simulations up to 8GHz with different structure parameters. At last, the measurement results of S-parameter and eye diagram were given and the S-parameters showed good coincidence between the measurement and HFSS simulation up to 4GHz.","PeriodicalId":225534,"journal":{"name":"Photoelectronic Technology Committee Conferences","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131121949","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