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2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666)最新文献

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High-power air-clad large-mode-area photonic crystal fiber laser 高功率空气包层大模面积光子晶体光纤激光器
2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666) Pub Date : 2003-06-22 DOI: 10.1109/CLEOE.2003.1313717
T. Schreiber, J. Limpert, S. Nolte, H. Zellmer, A. Tunnermann, R. Iliew, F. Lederer, J. Broeng, G. Vienne, A. Petersson, C. Jakobsen
{"title":"High-power air-clad large-mode-area photonic crystal fiber laser","authors":"T. Schreiber, J. Limpert, S. Nolte, H. Zellmer, A. Tunnermann, R. Iliew, F. Lederer, J. Broeng, G. Vienne, A. Petersson, C. Jakobsen","doi":"10.1109/CLEOE.2003.1313717","DOIUrl":"https://doi.org/10.1109/CLEOE.2003.1313717","url":null,"abstract":"In this paper, we present the results of a high power photonic crystal fiber laser, where the well-known concepts of double-clad and large-mode-area design are transfered to an actively doped microstructured fiber. The double-clad design is achieved by surrounding the inner cladding (pump core) with a web of silica bridges (as thin as 390 nm and approximately 50 /spl mu/m long) which are substantially narrower than the wavelength of the guided radiation. It is concluded that air-clad microstructure ytterbium-doped large-mode-area fibers should be scalable to kW-level output powers, where nonlinearity will limit the performance.","PeriodicalId":6370,"journal":{"name":"2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2003-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72603977","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: 126
Pump modulated lasing pixels: a new approach for image generation 泵浦调制激光像素:一种新的图像生成方法
2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666) Pub Date : 2003-06-22 DOI: 10.1109/CLEOE.2003.1312384
A. Kornev, I. Kuchma, V. Pokrovskiy, L. Soms, V. K. Stupnikov
{"title":"Pump modulated lasing pixels: a new approach for image generation","authors":"A. Kornev, I. Kuchma, V. Pokrovskiy, L. Soms, V. K. Stupnikov","doi":"10.1109/CLEOE.2003.1312384","DOIUrl":"https://doi.org/10.1109/CLEOE.2003.1312384","url":null,"abstract":"The present paper describes an alternative approach to the image forming, which is in a spatial modulation of the gain in the active medium, by the spatial modulation of the density of pump. The problems for the super-Rayleigh resolution are discussed and a possibility of gray scale image generation was shown. The fragmentation of the cross section of the Fabry-Perot cavity helps to suppress smoothening of the image edges during large objects generation. A numerical model of pump modulated lasing pixels (PMLP) was developed, the results of calculation being in good agreement with experiments.","PeriodicalId":6370,"journal":{"name":"2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2003-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78244835","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
Practical issues of feedback interferometry for adaptive optics 自适应光学反馈干涉测量的实际问题
2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666) Pub Date : 2003-06-22 DOI: 10.1109/CLEOE.2003.1313809
D. Cheung, A. Somervell, T. H. Barnes, T. Haskell
{"title":"Practical issues of feedback interferometry for adaptive optics","authors":"D. Cheung, A. Somervell, T. H. Barnes, T. Haskell","doi":"10.1109/CLEOE.2003.1313809","DOIUrl":"https://doi.org/10.1109/CLEOE.2003.1313809","url":null,"abstract":"The idea of feedback interferometry for aberration correction was proposed by the author. Conventional adaptive optics (AO) systems usually use separate subsystems to perform wavefront sensing and correction, which involve large matrix manipulation. In a feedback interferometer, the intensity of the interference pattern is used to control the wavefront corrector, thus combining the two subsystems together. To develop a practical system for use in real turbulent environments, there are several issues that need to be considered. There are concerns in the control algorithm as well when try to use the system in practice. Scintillation and frequency response are the major issues. The frequency response determines how fast the aberration that the system can track and correct. Atmospheric induced aberration might have frequency components as high as 200 Hz.","PeriodicalId":6370,"journal":{"name":"2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2003-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75084292","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
Scalable high brightness laser pump for aerospace applications 用于航空航天应用的可伸缩高亮度激光泵
2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666) Pub Date : 2003-06-22 DOI: 10.1109/CLEOE.2003.1312142
E. Rugi, P. Mueller, P. Lambelet
{"title":"Scalable high brightness laser pump for aerospace applications","authors":"E. Rugi, P. Mueller, P. Lambelet","doi":"10.1109/CLEOE.2003.1312142","DOIUrl":"https://doi.org/10.1109/CLEOE.2003.1312142","url":null,"abstract":"The Contraves Space development activities for Optical Inter-satellite Link Communications have developed a scalable high brightness laser diode based pump. The optical design of using multidiode lasers allows flexibility with regard to the optical power and the pump wavelength while increasing the reliability figures of a single diode laser. The active alignment during integration guarantees an optical coupling efficiency higher than 60%. Material selection and thermo-mechanical design have been carried out to withstand the harsh environmental conditions typical of the launch phase and of the in orbit operation. Optimisation of mass and volume led to a compact and easy to accommodate solution. The functional and opto-mechanical performance has been validated by test.","PeriodicalId":6370,"journal":{"name":"2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2003-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74992857","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: 9
Gain measurements at 2.8 /spl mu/m and fluorescence spectroscopy in Er:LaF/sub 3/ waveguides fabricated by molecular beam epitaxy 分子束外延制备Er:LaF/sub - 3/波导的2.8 /spl μ m增益测量和荧光光谱分析
2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666) Pub Date : 2003-06-22 DOI: 10.1109/CLEOE.2003.1313700
A. Chardon, D. Shepherd, P. Camy, J. Doualan, E. Daran, G. Lacoste
{"title":"Gain measurements at 2.8 /spl mu/m and fluorescence spectroscopy in Er:LaF/sub 3/ waveguides fabricated by molecular beam epitaxy","authors":"A. Chardon, D. Shepherd, P. Camy, J. Doualan, E. Daran, G. Lacoste","doi":"10.1109/CLEOE.2003.1313700","DOIUrl":"https://doi.org/10.1109/CLEOE.2003.1313700","url":null,"abstract":"In this paper, the gain measurements and lasing action at 2.8 /spl mu/m and fluorescence spectroscopy in Er:LaF/sub 3/ planar waveguides fabricated by molecular beam epitaxy was demonstrated. The spectroscopic analysis shows that fluorescence lifetimes calculated by a Judd-Ofelt model based on the measured absorption spectra were in good agreement with measured fluorescence lifetimes.","PeriodicalId":6370,"journal":{"name":"2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2003-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74997333","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
High power hybrid laser SOFIA with a solid state oscillator and gaseous amplifiers 高功率混合激光索菲亚与固体振荡器和气体放大器
2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666) Pub Date : 2003-06-22 DOI: 10.1109/CLEOE.2003.1312159
P. Straka, H. Turčičova, J. Skála, B. Králiková, J. Dostál, K. Rohlena, J. Ullschmied, K. Jungwirth
{"title":"High power hybrid laser SOFIA with a solid state oscillator and gaseous amplifiers","authors":"P. Straka, H. Turčičova, J. Skála, B. Králiková, J. Dostál, K. Rohlena, J. Ullschmied, K. Jungwirth","doi":"10.1109/CLEOE.2003.1312159","DOIUrl":"https://doi.org/10.1109/CLEOE.2003.1312159","url":null,"abstract":"In this paper we build a new smaller iodine laser SOFIA and we also aim to develop the optical parametric chirped pulse amplification (OPCPA) method in laboratory of solid-state oscillator followed by iodine amplifiers and prepare its fast implementation at PALS(Prague Asterix Laser System).","PeriodicalId":6370,"journal":{"name":"2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2003-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77581929","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
Optoelectronic neural networks: mapping multilayer architectures on to an optoelectronic demonstrator 光电神经网络:将多层架构映射到光电演示器上
2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666) Pub Date : 2003-06-22 DOI: 10.1109/CLEOE.2003.1313588
A. Waddie, K. Symington, J. Snowdon, M. Taghizadeh
{"title":"Optoelectronic neural networks: mapping multilayer architectures on to an optoelectronic demonstrator","authors":"A. Waddie, K. Symington, J. Snowdon, M. Taghizadeh","doi":"10.1109/CLEOE.2003.1313588","DOIUrl":"https://doi.org/10.1109/CLEOE.2003.1313588","url":null,"abstract":"In this paper we outline some of the changes needed to implement multilayer feed-forward neural networks using the demonstrator hardware which was based on around an array of vertical cavity surface emitting lasers. Network simulations show that the neural network demonstrator hardware can be used to implement two different classes of feed-forward network, the multilayer perceptron (MLP) and radial basis function (RBF) networks. In both cases, the actual training of the networks is performed offline using hardware simulations and the weighted interconnections between neurons are fixed before application to the optoelectronic hardware.","PeriodicalId":6370,"journal":{"name":"2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2003-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77699871","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 physical properties of photorefractive SBN single crystals, doped with Co, Cr, Ni 掺杂Co, Cr, Ni光折变SBN单晶的生长和物理性质
2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666) Pub Date : 2003-06-22 DOI: 10.1109/CLEOE.2003.1312352
L. Ivleva, N. Polozkov, P. Lykov, V. Osiko, T. Volk
{"title":"Growth and physical properties of photorefractive SBN single crystals, doped with Co, Cr, Ni","authors":"L. Ivleva, N. Polozkov, P. Lykov, V. Osiko, T. Volk","doi":"10.1109/CLEOE.2003.1312352","DOIUrl":"https://doi.org/10.1109/CLEOE.2003.1312352","url":null,"abstract":"This paper investigated the modification of ferroelectric, photorefractive and photochromic properties of SBN crystals by means of introduction of the transition metals into the matrix. The two- and four-wave interaction in the crystals doped with Co;Cr;Ni was studied to determine the efficiency of their application in the storage of optical information and in phase conjugation of laser radiation. It was established that, of SBN crystals doped with Co;Cr;Ni, SBN:Co only is characterized by a strong dichroism in linear and photoinduced absorption. The steady-state and dynamic behavior of absorption gratings in nonpoled SBN:Co was studied.","PeriodicalId":6370,"journal":{"name":"2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2003-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80272569","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
Tunable Tm-doped silica fibre laser 可调谐掺铥硅光纤激光器
2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666) Pub Date : 2003-06-22 DOI: 10.1109/CLEOE.2003.1313684
Jayanta K. Sahu, C. Codemard, R. Selvas, J. Nilsson, Mathieu Laroche, W. Clarkson
{"title":"Tunable Tm-doped silica fibre laser","authors":"Jayanta K. Sahu, C. Codemard, R. Selvas, J. Nilsson, Mathieu Laroche, W. Clarkson","doi":"10.1109/CLEOE.2003.1313684","DOIUrl":"https://doi.org/10.1109/CLEOE.2003.1313684","url":null,"abstract":"We report the continuous-wave operation of a thulium-doped silica fibre laser, pumped at 1567 nm from an erbium/ytterbium-doped fibre laser. The quantum efficiency of 51% (with respect to absorbed pump power) is obtained at a wavelength of 1830 nm. The laser can be tuned continuously from 1750 to 1880 nm using an external grating.","PeriodicalId":6370,"journal":{"name":"2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2003-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79239878","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
Identification of process domains in cutting 切削过程域的识别
2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666) Pub Date : 2003-06-22 DOI: 10.1109/CLEOE.2003.1313631
W. Schulz, J. Michel, S. Pfeiffer, M. Niessen, V. Kostrykin
{"title":"Identification of process domains in cutting","authors":"W. Schulz, J. Michel, S. Pfeiffer, M. Niessen, V. Kostrykin","doi":"10.1109/CLEOE.2003.1313631","DOIUrl":"https://doi.org/10.1109/CLEOE.2003.1313631","url":null,"abstract":"Summary form only given. Laser cutting is an established separation process. Reliable machining at high productivity and quality as well as simplified machine operation are the actual goals. Monitoring and control of the dynamical process is investigated. This work describes the advances in fundamental physical modeling of time dependent processes such as piercing and contour cutting. Singular perturbation and spectral methods are applied to reveal the number and type of characteristic dynamical variables. Refinement of the dynamical model is performed in order to identify the relations between phase space dimension of the model, properties of the monitoring signals and the quality features of the process. As result the dynamical properties of the process are mapped to different domains of the processing parameters.","PeriodicalId":6370,"journal":{"name":"2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2003-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81496104","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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