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Advances in Optoelectronics and Micro/nano-optics最新文献

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Nanostructured materials for sensing and imaging 传感和成像用纳米结构材料
Advances in Optoelectronics and Micro/nano-optics Pub Date : 2010-12-01 DOI: 10.1109/AOM.2010.5713576
D. Zhang, C. Yan, X. Chen, Y. J. Jin, D. D. Li, H. Bian, Z. J. Xu, Y. Wang
{"title":"Nanostructured materials for sensing and imaging","authors":"D. Zhang, C. Yan, X. Chen, Y. J. Jin, D. D. Li, H. Bian, Z. J. Xu, Y. Wang","doi":"10.1109/AOM.2010.5713576","DOIUrl":"https://doi.org/10.1109/AOM.2010.5713576","url":null,"abstract":"From semiconductor quantum well structures to the currently hottest metamaterials, the conquest of nano-world has been occurring in almost every field of research. In the field of quantum well structures for infrared photodetection, the inclusion of dilute nitride layers in the mature GaAs based quantum well structures results in a TE dominate photocurrent and the incorporation of nitrogen in the narrow bandgap InSb materials makes it possible for wide band infrared absorption covering mid and long wavelength infrared range. With the nanostructured materials made of metal and dielectric composites, visible light can be manipulated, which has potential application for super resolution imaging beyond diffraction limit.","PeriodicalId":222199,"journal":{"name":"Advances in Optoelectronics and Micro/nano-optics","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124951805","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 vision guided diamond turning tools automatic lapping system 视觉导向金刚石车刀自动研磨系统的研制
Advances in Optoelectronics and Micro/nano-optics Pub Date : 2010-12-01 DOI: 10.1109/AOM.2010.5713596
Z. Qiu, L. Ding, F. Fang
{"title":"Development of vision guided diamond turning tools automatic lapping system","authors":"Z. Qiu, L. Ding, F. Fang","doi":"10.1109/AOM.2010.5713596","DOIUrl":"https://doi.org/10.1109/AOM.2010.5713596","url":null,"abstract":"With the development of ultra-precision machining technology for aspheric surface and optical free-form surface, the demands of high-precision circular arc monocrystal diamond turning tools are increasing. At present, most diamond turning tools are manufactured by skilled workers, so the market demands for precision and efficiency are difficult to be satisfied. In this research, an vision guided diamond turning tools automatic lapping system was developed. Using shape-based template matching method to improve the tool' initial installing precison, and then profile information of cutting edge in sub-pixel precision was obtained by image processing technologies. High precision diamond cutting edge can be achieved under pertinent lapping. This method can avoid the error which is inevitably caused by refixturing process for off line measurement in the traditional lapping process, and reduce the influence of human factors in lapping results. In cutting edge truing experiments, diamond tools with radius 1 mm, 0.5 mm and 0.2 mm were measured sucessfully by image processing method. It could acquire the profile information needed by automatic lapping online, and provide a guarantee for development of automatic lapping system in accuracy and efficiency. Cutting edge of profile tolerance ≤ ± 1µm was finished in experiments.","PeriodicalId":222199,"journal":{"name":"Advances in Optoelectronics and Micro/nano-optics","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123775231","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
Improved cathode for semitransparent organic solar cells 改进的半透明有机太阳能电池阴极
Advances in Optoelectronics and Micro/nano-optics Pub Date : 2010-12-01 DOI: 10.1109/AOM.2010.5713600
G. Ng, W. Goh, Vijila Chellappan, H. Tam, F. Zhu
{"title":"Improved cathode for semitransparent organic solar cells","authors":"G. Ng, W. Goh, Vijila Chellappan, H. Tam, F. Zhu","doi":"10.1109/AOM.2010.5713600","DOIUrl":"https://doi.org/10.1109/AOM.2010.5713600","url":null,"abstract":"High quality transparent cathode is one of the major impediments to achieve high performance semitransparent organic solar cells (OSCs). This work reports a study of the effect of Al/indium tin oxide (ITO) cathode for application in poly(3-hexylthiophene) (P3HT):1-(3-methoxycarbonyl)-propyl-1-phenyl-(6,6)C60 (PCBM)-based semitransparent OSCs. The power conversion efficiency (PCE) and lifetime of OSCs made with Al/ITO-based cathode are studied and compared with structure identical OSCs made with Ca/Ag/ITO-based cathode. The interfacial properties at polymer/cathode interface were investigated using X-ray Photoelectron Spectroscopy (XPS). It is found that an ultrathin Al:AlOx interlayer was formed at polymer/cathode interface, induced during the ITO deposition. Semitransparent OSCs with Al/ITO cathode having a PCE of up to 2.37% with an average transmittance >40% at light wavelength of 650nm were demonstrated. The results reveal that the presence of an ultrathin AlOx layer at the polymer/cathode interface plays a role in determining the stability of the semitransparent OSCs. The possible designs to improve the performance of semitransparent organic solar cells over the two competing indexes of power conversion efficiency and transmittance are discussed.","PeriodicalId":222199,"journal":{"name":"Advances in Optoelectronics and Micro/nano-optics","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126465521","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
Light collection systems for multiple LED arrays 用于多个LED阵列的光收集系统
Advances in Optoelectronics and Micro/nano-optics Pub Date : 2010-12-01 DOI: 10.1109/AOM.2010.5713510
Chenhui Peng, Xiaoning Li, Lingling Xiong, Pu Zhang, Xingsheng Liu, Jingwei Wang
{"title":"Light collection systems for multiple LED arrays","authors":"Chenhui Peng, Xiaoning Li, Lingling Xiong, Pu Zhang, Xingsheng Liu, Jingwei Wang","doi":"10.1109/AOM.2010.5713510","DOIUrl":"https://doi.org/10.1109/AOM.2010.5713510","url":null,"abstract":"Light emitting diode (LED) has numerous advantages such as long lifetime, large color gamut, small size and the absence of mercury vapor and thus there has been recognition that LED could be an alternative light source for projection display application. Due to its compact size, LED is a very attractive RGB light source for portable projectors. To improve the brightness of the projector, it is very critical to improve the light collection efficiency of the RGB LED light sources. In this work, traditional compound parabolic concentrator (CPC) was designed and its performance was studied. The CPC has a high collection efficiency, but its size is too bulky to be used in the portable projectors. Hence, a freeform collection system was designed and optimized to gain a compact size which can be used in the portable projectors. After optimization, it has a collection efficiency of 85%, slightly lower than that of the traditional CPC. But its diameter of the output aperture is 13.4 mm, 36% smaller than that of the traditional CPC and its length is 25 mm, 58% shorter than that of the traditional CPC. Meanwhile, the divergence angle of the freeform collection system is ± 10 ° which is smaller than that of the designed traditional CPC. Hence, the freeform collection system may be used as the collimator in the portable projection display application.","PeriodicalId":222199,"journal":{"name":"Advances in Optoelectronics and Micro/nano-optics","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114225881","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
Using anti-membrane and TIP to improve power LEDs quantum efficiency 利用反膜和TIP提高功率led量子效率
Advances in Optoelectronics and Micro/nano-optics Pub Date : 2010-12-01 DOI: 10.1109/AOM.2010.5713531
Huang Hong-yong, Guo Zhi-you, Cao Dong-xing, Kong Li-ping, J. Ye, B. Liang
{"title":"Using anti-membrane and TIP to improve power LEDs quantum efficiency","authors":"Huang Hong-yong, Guo Zhi-you, Cao Dong-xing, Kong Li-ping, J. Ye, B. Liang","doi":"10.1109/AOM.2010.5713531","DOIUrl":"https://doi.org/10.1109/AOM.2010.5713531","url":null,"abstract":"The paper studies the technologies to improve the quantum efficiency of light-emitting diodes (LEDs), and designs new LED structures from the theory and software simulation. Including new LEDs with anti-membrane and truncated-inverted-pyramid (TIP) chip. Then we try to design a new kind LEDs with the two ways together. Their relative improvements of luminous efficiency are 16.8%, 26.933% and 47.198 %.These studies provide effective data and design methods to improve the efficiency of quantum LED.","PeriodicalId":222199,"journal":{"name":"Advances in Optoelectronics and Micro/nano-optics","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114961637","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
Lateral current spreading in stripe laser diodes 条纹激光二极管中的横向电流扩展
Advances in Optoelectronics and Micro/nano-optics Pub Date : 2010-12-01 DOI: 10.1109/AOM.2010.5713517
Xiaodong Du, W. Guo, B. Cui, Weiguo Li, Xinwei Xu
{"title":"Lateral current spreading in stripe laser diodes","authors":"Xiaodong Du, W. Guo, B. Cui, Weiguo Li, Xinwei Xu","doi":"10.1109/AOM.2010.5713517","DOIUrl":"https://doi.org/10.1109/AOM.2010.5713517","url":null,"abstract":"Lateral current spreading is experimentally and theoretically investigated in stripe laser diodes. The influence of current spreading length to threshold current density is quantitatively analyzed. The factors of current spreading length that residual thickness, resistivity of upper cladding layer, injected current density are numerically calculated. It is found that effective current rate declines with the injected current increasing and resistivity affects the current spreading length dramatically. A critical injected current density exists below which the slope efficiency increases with the injected current density increasing. Above this critical value, the slope efficiency declines with the injected current density increasing. This critical value helps to find the best work current, which can extend the lasers' life.","PeriodicalId":222199,"journal":{"name":"Advances in Optoelectronics and Micro/nano-optics","volume":"395 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131881227","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
Realtime calibration of pulse oximetry based on Grey Model 基于灰色模型的脉搏血氧实时标定
Advances in Optoelectronics and Micro/nano-optics Pub Date : 2010-12-01 DOI: 10.1109/AOM.2010.5713537
Jinglin Xu, Mengyan Gu
{"title":"Realtime calibration of pulse oximetry based on Grey Model","authors":"Jinglin Xu, Mengyan Gu","doi":"10.1109/AOM.2010.5713537","DOIUrl":"https://doi.org/10.1109/AOM.2010.5713537","url":null,"abstract":"This paper applies Grey Model to calibrate pulse oximetry. The method is proved to be efficient and accurate under standard qualification evaluation. A transformation function is introduced to make the data better fit the prediction model.","PeriodicalId":222199,"journal":{"name":"Advances in Optoelectronics and Micro/nano-optics","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125131571","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
High efficiency single-doped white phosphorescent light-emitting diodes 高效单掺杂白光磷光二极管
Advances in Optoelectronics and Micro/nano-optics Pub Date : 2010-12-01 DOI: 10.1109/AOM.2010.5713539
Q. Niu, Yunhua Xu, Junbiao Peng, Yong Zhang
{"title":"High efficiency single-doped white phosphorescent light-emitting diodes","authors":"Q. Niu, Yunhua Xu, Junbiao Peng, Yong Zhang","doi":"10.1109/AOM.2010.5713539","DOIUrl":"https://doi.org/10.1109/AOM.2010.5713539","url":null,"abstract":"Efficient polymer white-light-emitting diodes (WPLEDs) have been fabricated with a single emissive layer, blue-green fluorescence polymer doped with a red phosphorescent dye. The device structure consists of ITO/poly(ehtlenedioxythiophene):poly(styrene sulfonic acid) (PEDOT:PSS)/poly(N-vinylcarbazole) (PVK) /poly(9,9-dioctylfluorene) (PFO): Ir-complex (Ir(DMFPQ)2pbm) /CsF/Al. Energy transfer occurred from PFO to Ir(DMFPQ)2pbm, leading to electroluminescence quench of PFO. Pure and efficient white light emission was realized by tuning the weight ratio of PFO:Ir(DMFPQ)2pbm to 99.7: 0.3. The maximum current efficiency and luminance of WPLEDs were 9.6cd/A at 7.8V and 13491cd/m2 at 11.4V, respectively.","PeriodicalId":222199,"journal":{"name":"Advances in Optoelectronics and Micro/nano-optics","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124441184","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
Ambiguity function used for detection of confocal microscope 模糊函数用于共聚焦显微镜的检测
Advances in Optoelectronics and Micro/nano-optics Pub Date : 2010-12-01 DOI: 10.1109/AOM.2010.5713594
Xiangdong Huang, Jiubin Tan, Jiaxing Zhu
{"title":"Ambiguity function used for detection of confocal microscope","authors":"Xiangdong Huang, Jiubin Tan, Jiaxing Zhu","doi":"10.1109/AOM.2010.5713594","DOIUrl":"https://doi.org/10.1109/AOM.2010.5713594","url":null,"abstract":"In the conventional confocal microscope, the alignment of physical pinholes is an important problem. In this paper, a digital pinhole filter based on image restoration is investigated for the confocal microscope. Firstly, we discuss the properties of ambiguity function. Next, we use it to build the off-focus point spread function (PSF). Then, we use image restoration technique based on inverse filtering method to reject out-of-focus light in order to improve the depth resolution. Experimental results indicate that the method can reduce the pixel crosstalk resulting from out-of-focus light, and the alignment of pinholes can be made easy.","PeriodicalId":222199,"journal":{"name":"Advances in Optoelectronics and Micro/nano-optics","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122573725","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
Polarization splitter based on all solid three-core photonic crystal fibers 基于全固体三芯光子晶体光纤的偏振分光器
Advances in Optoelectronics and Micro/nano-optics Pub Date : 2010-12-01 DOI: 10.1109/AOM.2010.5713564
D. Mao, C. Guan, Libo Yuan
{"title":"Polarization splitter based on all solid three-core photonic crystal fibers","authors":"D. Mao, C. Guan, Libo Yuan","doi":"10.1109/AOM.2010.5713564","DOIUrl":"https://doi.org/10.1109/AOM.2010.5713564","url":null,"abstract":"A polarization splitter in all-solid PCF based on the mode-sorting effect is proposed. A full-vector finite element method is employed to design the splitter, and a full-vector beam propagation method is used to analyze the characteristics of the splitter. Numerical simulations show that the splitting length is 7.7mm when the operating wavelength is 1.55µm. An extinction ratio less than −15dB is obtained within the wavelength range of 1.537–1.561µm. In addition, the extinction ratios are −32.7dB and −20.0dB for x and y polarization, respectively.","PeriodicalId":222199,"journal":{"name":"Advances in Optoelectronics and Micro/nano-optics","volume":"241 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122465829","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
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