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CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005.最新文献

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Actively mode-locked fiber laser with semiconductor all-optical modulator 带半导体全光调制器的主动锁模光纤激光器
CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005. Pub Date : 2005-06-17 DOI: 10.1109/CLEOE.2005.1568305
M. Rusu, R. Herda, A. Vainionpaa, S. Suomalainen, O. Tengvall, T. Hakulinen, O. Okhotnikov
{"title":"Actively mode-locked fiber laser with semiconductor all-optical modulator","authors":"M. Rusu, R. Herda, A. Vainionpaa, S. Suomalainen, O. Tengvall, T. Hakulinen, O. Okhotnikov","doi":"10.1109/CLEOE.2005.1568305","DOIUrl":"https://doi.org/10.1109/CLEOE.2005.1568305","url":null,"abstract":"In this paper, we report on an actively mode-locked 1.56-mum erbium fiber laser using all-optical surface-normal semiconductor modulator. The 1.56-mum modulator is a purposely-designed semiconductor modulator mirror (SEMM) exploiting saturable absorption in the multiple quantum-well structure with enhanced modulation depth. Conceptually, the SEMM structure is very similar to the absorber mirrors used for passive mode-locking, except for higher values of saturation fluence and recovery time as compared to typical parameters for SESAMs","PeriodicalId":354643,"journal":{"name":"CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005.","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127176899","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
Dynamics of matter solitons in modulated optical lattices 调制光学晶格中物质孤子的动力学
CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005. Pub Date : 2005-06-17 DOI: 10.1109/CLEOE.2005.1568473
V. Brazhnyi, V. Konotop, V. Kuzmiak
{"title":"Dynamics of matter solitons in modulated optical lattices","authors":"V. Brazhnyi, V. Konotop, V. Kuzmiak","doi":"10.1109/CLEOE.2005.1568473","DOIUrl":"https://doi.org/10.1109/CLEOE.2005.1568473","url":null,"abstract":"In the present work this situation is studied analytically and numerically. In particular, we show that this is a way of managing the dynamics of matter waves - making them accelerating, oscillating, etc. In a general case, to describe the effect of the modulation, we compute dependence of the gap structure, of the group velocity of the Bloch wave, and of the effective mass of the soliton on spatial variable. The effective mass approach appears to be a useful analytical tool in this case, as well. The main physical interest of this situation consists of the fact that now the defect affects a matter soliton by interacting with its carrier wave and gives origin to various resonant effects","PeriodicalId":354643,"journal":{"name":"CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005.","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124332094","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
Orientational imaging and tracking of single colloidal CdSe quantum dots by defocused microscopy 单胶体CdSe量子点的散焦显微镜定向成像与跟踪
CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005. Pub Date : 2005-06-17 DOI: 10.1109/CLEOE.2005.1568399
X. Brokmann, M. Ehrensperger, J. Hermier, M. Dahan, A. Triller
{"title":"Orientational imaging and tracking of single colloidal CdSe quantum dots by defocused microscopy","authors":"X. Brokmann, M. Ehrensperger, J. Hermier, M. Dahan, A. Triller","doi":"10.1109/CLEOE.2005.1568399","DOIUrl":"https://doi.org/10.1109/CLEOE.2005.1568399","url":null,"abstract":"We have demonstrated the possibility to obtain the orientation of single CdSe quantum dots by optical defocused microscopy. At the single molecule level, it is a useful tool to analyse the modification of the spontaneous emission of a single emitter close to an interface, it could also be used to study processes such as energy transfer between a quantum dot and a fluorophore. In the field of biological detection, this technique could he employed to investigate the rotary motion of molecular motors","PeriodicalId":354643,"journal":{"name":"CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005.","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123706386","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
Method for characterisation of weakly guiding waveguides by measuring mode field diameter 用测量模场直径表征弱导波导的方法
CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005. Pub Date : 2005-06-17 DOI: 10.1109/CLEOE.2005.1568342
M. Dubov, V. Mezentsev, I. Bennion
{"title":"Method for characterisation of weakly guiding waveguides by measuring mode field diameter","authors":"M. Dubov, V. Mezentsev, I. Bennion","doi":"10.1109/CLEOE.2005.1568342","DOIUrl":"https://doi.org/10.1109/CLEOE.2005.1568342","url":null,"abstract":"In this paper, we described an efficient theoretical approach to determine the integral characteristics such as Mode Field Diameter (MFD) and V-parameter of the Weakly guiding waveguides. To test the described method we measured MFD for the commercially available step index single mode fibre with known parameters. The results of these measurements are presented for two different wavelengths. It is worth noting that the developed approach implies infinite cladding, thus care should be taken to avoid influence of finiteness of cladding when MFD compares to cladding diameter","PeriodicalId":354643,"journal":{"name":"CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005.","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121695018","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
Application of multi-dimensional fluorescence imaging to microfluidic devices 多维荧光成像在微流控器件中的应用
CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005. Pub Date : 2005-06-17 DOI: 10.1109/CLEOE.2005.1568396
R. Benninger, J. McGinty, O. Hofmann, J. Requejo-Isidro, I. Munro, D. Elson, C. Dunsby, B. Onfelt, D. Davis, M. Neil, A. deMello, P. French
{"title":"Application of multi-dimensional fluorescence imaging to microfluidic devices","authors":"R. Benninger, J. McGinty, O. Hofmann, J. Requejo-Isidro, I. Munro, D. Elson, C. Dunsby, B. Onfelt, D. Davis, M. Neil, A. deMello, P. French","doi":"10.1109/CLEOE.2005.1568396","DOIUrl":"https://doi.org/10.1109/CLEOE.2005.1568396","url":null,"abstract":"The field of microfluidics has developed rapidly with promising applications such as 'lab on a chip' devices for micro-assays and efficient chemical reactions and processes, including e.g. DNA sequencing. The design of microfluidic devices requires an understanding of fluid flow and dynamics, which we demonstrate can be enhanced by direct observation using (time-resolved) multi-dimensional fluorescence imaging (MDFI). As well as providing opportunities to study fluid dynamics, MDFI provides new opportunities for read-out and analysis which may be applied to assay development and to studies of reaction kinetics e.g. stop-flow experiments. We present our first results using time-gated fluorescence imaging, resolved with respect to 2 or 3 spatial dimensions. Time-resolved imaging of fluorescence polarisation anisotropy may be used to image mixing in a microfluidic device via maps of the rotational correlation time, which is proportional to the local fluorophore solvent viscosity","PeriodicalId":354643,"journal":{"name":"CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130791118","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
A passively Q-switched Er/sup 3+/ -doped fiber laser using a Co/sup 2+/ -doped fiber as saturable absorber 一种以Co/sup +/掺杂光纤为可饱和吸收体的被动调q Er/sup +/掺杂光纤激光器
CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005. Pub Date : 2005-06-17 DOI: 10.1109/CLEOE.2005.1568339
B. Dussardier, A. Saissy, L. Tordella
{"title":"A passively Q-switched Er/sup 3+/ -doped fiber laser using a Co/sup 2+/ -doped fiber as saturable absorber","authors":"B. Dussardier, A. Saissy, L. Tordella","doi":"10.1109/CLEOE.2005.1568339","DOIUrl":"https://doi.org/10.1109/CLEOE.2005.1568339","url":null,"abstract":"In this paper, we present a model describing the time dependent characteristics of a passive Q-switching (PQS) laser composed of amplifying and saturable absorber fibers, specially taking into account the transverse singlemode intensity distribution, long interaction length, high gain and absorption coefficients, and including the effects of amplified spontaneous emission","PeriodicalId":354643,"journal":{"name":"CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005.","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130880344","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
Discrete-symmetry and angular pseudo-momentum in nonlinear photonic crystals 非线性光子晶体中的离散对称性和角伪动量
CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005. Pub Date : 2005-06-17 DOI: 10.1109/CLEOE.2005.1568474
A. Ferrando, M. Zacarés, M. Garcia-March, P. F. de Córdoba, D. Binosi
{"title":"Discrete-symmetry and angular pseudo-momentum in nonlinear photonic crystals","authors":"A. Ferrando, M. Zacarés, M. Garcia-March, P. F. de Córdoba, D. Binosi","doi":"10.1109/CLEOE.2005.1568474","DOIUrl":"https://doi.org/10.1109/CLEOE.2005.1568474","url":null,"abstract":"The aim of this contribution is two-fold. We propose a new approach to the search for vortex solutions of a general nonlinear equation that describes not only both optical and Bose-Einstein condensates discrete-symmetry systems but also more general situations. A general expression for symmetric vortex solutions will be proved by showing that they are angular Bloch modes associated to the invariance under finite rotations of the discrete-symmetry system. Numerical evidence of the existence of these contraints are given using a photonic crystal fiber (PCF) as a physical example of discrete-symmetry system","PeriodicalId":354643,"journal":{"name":"CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005.","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134204096","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
Optimized homogeneous immunoassay based on XeCI-laser excited foirster resonance energy transfer 基于xeci激光激发福斯特共振能量传递的优化均匀免疫分析
CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005. Pub Date : 2005-06-17 DOI: 10.1109/CLEOE.2005.1568413
N. Hildebrandt, R. Flehr, E. Bois, H. Lohmannsroben
{"title":"Optimized homogeneous immunoassay based on XeCI-laser excited foirster resonance energy transfer","authors":"N. Hildebrandt, R. Flehr, E. Bois, H. Lohmannsroben","doi":"10.1109/CLEOE.2005.1568413","DOIUrl":"https://doi.org/10.1109/CLEOE.2005.1568413","url":null,"abstract":"We have investigated a commercial fluorescence immunoassay (FIA) reader (KRYPTOR-Cezanne), designed for homogeneous immunoassays, which is based on a time-resolved measurement of Forster resonance energy transfer (FRET) from a europium cryptate (Eu-TBP) donor to a crosslinked allophycocyanin (XL665) acceptor. The system uses a nitrogen laser as excitation source and a two-channel PMT detection system with filter-based wavelength separation. The most important factor for FIA to compete with chemiluminescent immunoassay systems is sensitivity. Compared to N2-laser excitation the limit of detection (LOD) with the XeCl-laser was decreased by a factor of 3 in the same reader system by simply exchanging lasers. Using the so called Gate-Delay-LOD Matrix the optimal delay time and measuring window time (gate) in which the luminescence signal is integrated can be determined . This is an important tool for applying system changes (e.g. excitation wavelength or energy) to different FIA tests","PeriodicalId":354643,"journal":{"name":"CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005.","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134256310","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
Four wave mixing at the band edge of a 1D photonic crystal 一维光子晶体带边的四波混频
CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005. Pub Date : 2005-06-17 DOI: 10.1109/CLEOE.2005.1568360
M. Astic, D. Trager, L. Razzari, P. Delaye, R. Frey, G. Roosen, R. André
{"title":"Four wave mixing at the band edge of a 1D photonic crystal","authors":"M. Astic, D. Trager, L. Razzari, P. Delaye, R. Frey, G. Roosen, R. André","doi":"10.1109/CLEOE.2005.1568360","DOIUrl":"https://doi.org/10.1109/CLEOE.2005.1568360","url":null,"abstract":"One way to realize such a light localization is to structure the material at the wavelength size level creating thus a photonic crystal that may present a photonic band gap that prevents propagation of light in it for a given frequency bandwidth. Near its band edge such a structure becomes transparent and presents a low group velocity connected to a very pronounced light localization inside the structure or, equivalently, a high local intensity that favors the nonlinear phenomena. To study such an effect we develop a four wave mixing experiment based on a tunable picosecond laser source that allows to perform a spectroscopic study of the phase conjugate reflectivity","PeriodicalId":354643,"journal":{"name":"CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005.","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131133875","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
Investigation of Nd:Yb - codoped silica fibers as a laser material 钕镱共掺二氧化硅光纤作为激光材料的研究
CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005. Pub Date : 2005-06-17 DOI: 10.1109/CLEOE.2005.1568333
U. Ropke, S. Jetschke, S. Unger
{"title":"Investigation of Nd:Yb - codoped silica fibers as a laser material","authors":"U. Ropke, S. Jetschke, S. Unger","doi":"10.1109/CLEOE.2005.1568333","DOIUrl":"https://doi.org/10.1109/CLEOE.2005.1568333","url":null,"abstract":"The increasing interest in high power fiber lasers is connected with the task of providing the necessary pump energy at acceptable costs. High power laser experiments with commercially available multi-wavelengths diode laser systems and silica fibers codoped with Neodymium (Nd) and Ytterbium (Yb) demonstrated the potential of this laser concept. Fluorescence investigations of Nd:Yb-codoped silica fibers proved an effective energy transfer from stimulated Nd ions to Yb ions. To get a better understanding of this laser medium we investigated the fluorescence spectra, the fluorescence decay and the laser characteristics both experimentally and theoretically. In conclusion, we present experimental results and a model for the understanding of fluorescence and laser properties of Nd:Yb-codoped silica fibers","PeriodicalId":354643,"journal":{"name":"CLEO/Europe. 2005 Conference on Lasers and Electro-Optics Europe, 2005.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129442196","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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