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Femtosecond dynamic holography in C60 solutions C60溶液中的飞秒动态全息
Conference on Lasers and Electro-Optics Europe Pub Date : 1998-01-01 DOI: 10.1364/cleo_europe.1998.ctui70
V. Bespalov, V. Krylov, D. Staselko, A. Rebane
{"title":"Femtosecond dynamic holography in C60 solutions","authors":"V. Bespalov, V. Krylov, D. Staselko, A. Rebane","doi":"10.1364/cleo_europe.1998.ctui70","DOIUrl":"https://doi.org/10.1364/cleo_europe.1998.ctui70","url":null,"abstract":"Fullerene molecules (C60, C70, C76) are known to posses unusual nonlinear optical response characteristics, which make them attractive for variety of applications, including optical limiters, recording media and switching devices [1-3]. These nonlinear properties are associated with the fullerene molecules having unique carbon-carbon single-and double bonds and combination of singlet- and triplet excited electronic states. Due to broad spectral range of the nonlinear response, fullerene-based materials may be used for recording of dynamic holograms from UV to near IR. In this paper we present results of experiments, where we study efficient self-diffraction from dynamic gratings recorded in C60 solution in orto-xylene using excitation with energetic 150-fs-duration pulses at 780 nm wavelength.","PeriodicalId":10610,"journal":{"name":"Conference on Lasers and Electro-Optics Europe","volume":"58 1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90936755","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
Sub-15-fs Pulses at 1.5 µm by Parametric Generation 通过参数生成1.5µm的sub - 15fs脉冲
Conference on Lasers and Electro-Optics Europe Pub Date : 1998-01-01 DOI: 10.1364/cleo_europe.1998.cwh3
M. Nisoli, S. Stagira, S. De Silvestri, O. Svelto, G. Valiulis, A. Varanavičius
{"title":"Sub-15-fs Pulses at 1.5 µm by Parametric Generation","authors":"M. Nisoli, S. Stagira, S. De Silvestri, O. Svelto, G. Valiulis, A. Varanavičius","doi":"10.1364/cleo_europe.1998.cwh3","DOIUrl":"https://doi.org/10.1364/cleo_europe.1998.cwh3","url":null,"abstract":"Ultrashort high-energy pulses tunable In the infrared are strongly needed for applications in nonlinear optics and spectroscopy. Sub-100-fs infrared pulses were achieved by traveling- wave optical parametric amplification (OPA) [1-3]. The generation of multi-gigawatt sub-20- fs pump pulses, obtained by the hollow-fiber compression technique [4], offers the possibility to investigate parametric processes in an ultrashort temporal regime.","PeriodicalId":10610,"journal":{"name":"Conference on Lasers and Electro-Optics Europe","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80067076","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
Nonlinear Optical Anisotropy of Metallic Surfaces 金属表面的非线性光学各向异性
Conference on Lasers and Electro-Optics Europe Pub Date : 1998-01-01 DOI: 10.1364/cleo_europe.1998.cthh46
F. Lohner, A. Villaeys
{"title":"Nonlinear Optical Anisotropy of Metallic Surfaces","authors":"F. Lohner, A. Villaeys","doi":"10.1364/cleo_europe.1998.cthh46","DOIUrl":"https://doi.org/10.1364/cleo_europe.1998.cthh46","url":null,"abstract":"These last years, many experimental results have been published to emphasize the nonlinear optical properties of metallic surfaces. Two recent experiments done by Murphy et al. (Phys. Rev. Lett. 63, 318 (1989)) and Janz et al. (Phys. Rev. B 44, 8, 3943 (1991)) have stressed the polarization anisotropy as well as the azimuthal anisotropy of the (111) surface of Aluminum.","PeriodicalId":10610,"journal":{"name":"Conference on Lasers and Electro-Optics Europe","volume":"PP 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84543741","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
Assessment of the total emission of sulphur dioxide from Italian volcanoes in simultaneous shipborne measurements using lidar, doas and correlation spectroscopy 利用激光雷达、doas和相关光谱学同时进行船载测量，评估意大利火山的二氧化硫总排放量
Conference on Lasers and Electro-Optics Europe Pub Date : 1998-01-01 DOI: 10.1364/cleo_europe.1998.cmi4
P. Weibring, T. Lindström, H. Edner, S. Svanberg, T. Caltabiano, G. Cecchi, L. Pantani
{"title":"Assessment of the total emission of sulphur dioxide from Italian volcanoes in simultaneous shipborne measurements using lidar, doas and correlation spectroscopy","authors":"P. Weibring, T. Lindström, H. Edner, S. Svanberg, T. Caltabiano, G. Cecchi, L. Pantani","doi":"10.1364/cleo_europe.1998.cmi4","DOIUrl":"https://doi.org/10.1364/cleo_europe.1998.cmi4","url":null,"abstract":"Volcanoes contribute substantial amounts of sulphur dioxide to the global atmosphere, and thus reliable measurements are needed for an accurate assessment of the relative roles of natural and antropogenic emissions. Normally, gas correlation measurements based on COSPEC instruments are performed, observing in ground-based traverses the spectral imprint of the gas in the spectrum of the down-welling ambient radiation. However, because of complicated scattering conditions above, within and below the volcanic plume, data are complex. The differential optical absorption spectroscopy (doas) technique works in a similar way but also provides the full spectrum for detailed analysis. The lidar technique, being an active remote sensing technique, provides more well-defined measurement conditions. Field tests have been performed using the research vessel \"Urania\", where scans under the plumes from the Italian volcanoes Etna, Stromboli and Volcano were performed. Three cruises were made, where the last one, in August 1997, provided the most complete and accurate data.","PeriodicalId":10610,"journal":{"name":"Conference on Lasers and Electro-Optics Europe","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83300902","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
Single supermode harmonically modelocked Ti:Er:LiNbO3 waveguide laser 单超模谐波锁模Ti:Er:LiNbO3波导激光器
Conference on Lasers and Electro-Optics Europe Pub Date : 1998-01-01 DOI: 10.1364/cleo_europe.1998.cpd1.5
R. Wessel, K. Rochhausen, H. Suche, W. Sohler
{"title":"Single supermode harmonically modelocked Ti:Er:LiNbO3 waveguide laser","authors":"R. Wessel, K. Rochhausen, H. Suche, W. Sohler","doi":"10.1364/cleo_europe.1998.cpd1.5","DOIUrl":"https://doi.org/10.1364/cleo_europe.1998.cpd1.5","url":null,"abstract":"Harmonically modelocked lasers are interesting sources for high bit rate optical transmitters. We have already demonstrated actively modelocked Ti:Er:LiNbO3 waveguide lasers with pulse repetition frequencies up to 10 GHz [1]. But, harmonically modelocked lasers usually emit more than one comb of longitudinal modes (so called supermode) causing high frequency noise. For fibre lasers with a large number of supermodes an intracavity Fabry-Perot filter with a high finesse (>50) has been successfully used to select one supermode [2,3]. In this contribution we report single supermode operation of a Ti:Er:LiNbO3 waveguide laser by coupling of the active laser cavity to a passive, low finesse (2.3) waveguide Fabry-Perot.","PeriodicalId":10610,"journal":{"name":"Conference on Lasers and Electro-Optics Europe","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83831810","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
Nonlinear Cross Talk Between Mutually Incoherently Recorded Gratings In BaTiO3 BaTiO3中相互非相干记录光栅间的非线性串扰
Conference on Lasers and Electro-Optics Europe Pub Date : 1998-01-01 DOI: 10.1364/cleo_europe.1998.cwk4
J. Limeres, M. Carrascosa, P. Andersen, P. Petersen
{"title":"Nonlinear Cross Talk Between Mutually Incoherently Recorded Gratings In BaTiO3","authors":"J. Limeres, M. Carrascosa, P. Andersen, P. Petersen","doi":"10.1364/cleo_europe.1998.cwk4","DOIUrl":"https://doi.org/10.1364/cleo_europe.1998.cwk4","url":null,"abstract":"Recently, nonlinear coupling of simultaneously coherently recorded gratings in photorefractive BSO has been studied experimentally and theoretically [1]. This so-called nonlinear cross talk is induced through the nonlinear response of the photorefractive material. In applications involving multibeam interactions, such as photorefractive image amplification and holographic storage, the nonlinear cross talk may strongly affect the grating efficiencies. Previous interpretations of multibeam experiments in BaTiO3 are based entirely on beam coupling, which may lead to a disagreement between theory and experiments [2].","PeriodicalId":10610,"journal":{"name":"Conference on Lasers and Electro-Optics Europe","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83619347","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 Speed 1300 nm Vertical Cavity Surface Emitting Laser 高速1300nm垂直腔面发射激光器
Conference on Lasers and Electro-Optics Europe Pub Date : 1998-01-01 DOI: 10.1364/cleo_europe.1998.cpd1.9
F. Peters, V. Jayaraman, M. MacDougal, D. Van Deusen
{"title":"High Speed 1300 nm Vertical Cavity Surface Emitting Laser","authors":"F. Peters, V. Jayaraman, M. MacDougal, D. Van Deusen","doi":"10.1364/cleo_europe.1998.cpd1.9","DOIUrl":"https://doi.org/10.1364/cleo_europe.1998.cpd1.9","url":null,"abstract":"Vertical cavity surface-emitting lasers (VCSELs) have generated a great deal of interest due to the potential cost and performance advantages of the vertical structures. VCSELs operating at 850 nm have already entered the commercial market, while long wavelength (1300/1550 nm) VCSELs have lagged in their development. A few groups have demonstrated room-temperature continuous wave (CW) operation [1,2,3], with the highest output power (0.5 mW @ 25°C) and operating temperature (64°C) achieved at 1550 nm [1]. In this work, we describe 1300 nm VCSELs with an integrated 850 nm VCSEL optical pump [4].","PeriodicalId":10610,"journal":{"name":"Conference on Lasers and Electro-Optics Europe","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72946228","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
All-Electrode Bounded Bore, RF Excited CO2 Laser 全电极限定孔，射频激发CO2激光器
Conference on Lasers and Electro-Optics Europe Pub Date : 1998-01-01 DOI: 10.1364/cleo_europe.1998.cthh7
P. Vitruk, J. Broderick
{"title":"All-Electrode Bounded Bore, RF Excited CO2 Laser","authors":"P. Vitruk, J. Broderick","doi":"10.1364/cleo_europe.1998.cthh7","DOIUrl":"https://doi.org/10.1364/cleo_europe.1998.cthh7","url":null,"abstract":"All metal, non-free space, square-bore, RF-excited CO2 lasers [1] have 10-15% electro-optical efficiency and power extraction of up to 0.5 W/cm, which potentially could be further optimized In this presentation we describe an improved RF-excitation geometry, referred to as all-electrode bounded laser bore, schematically shown in Figure 1. This new electrode geometry helps to increase both the power extraction and efficiency of the diffusion-cooled RF excited CO2 laser.","PeriodicalId":10610,"journal":{"name":"Conference on Lasers and Electro-Optics Europe","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73223695","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
Design of Variable Reflectivity Output Coupler for High Power CO2 Lasers 高功率CO2激光器变反射率输出耦合器的设计
Conference on Lasers and Electro-Optics Europe Pub Date : 1998-01-01 DOI: 10.1364/cleo_europe.1998.ctui29
Heike Bartels, U. Habich, R. Poprawe
{"title":"Design of Variable Reflectivity Output Coupler for High Power CO2 Lasers","authors":"Heike Bartels, U. Habich, R. Poprawe","doi":"10.1364/cleo_europe.1998.ctui29","DOIUrl":"https://doi.org/10.1364/cleo_europe.1998.ctui29","url":null,"abstract":"In order to increase the laser power of CO2 lasers the active volume has to be enlarged. For CO2 lasers there are two possibilities: to increase either the resonator length or the tube diameter. A larger tube diameter means a higher Fresnel number and the laser will be most likely operated with an unstable resonator configuration, which extracts a beam with higher beam quality than a multimode stable resonator. Increasing the resonator length while the diameter remains constant leads to a smaller Fresnel number and a stable resonator configuration becomes reasonable. However, in both cases diffraction effects will be observed due to the limiting apertures, which affect the beam quality especially for high laser powers. To reduce these effects so called variable reflectivtiy mirrors (VRM) have been introduced (1) and investigated especially for solid state lasers (2). So far most investigations have been carried out on unstable VRM-resonators.","PeriodicalId":10610,"journal":{"name":"Conference on Lasers and Electro-Optics Europe","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75122829","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
In-Plane Modulation of non Linear Polymer Devices: Comparison of Electric, Photo-Assisted and Photoinduced Poling Processes 非线性聚合物器件的平面内调制:电、光辅助和光诱导极化过程的比较
Conference on Lasers and Electro-Optics Europe Pub Date : 1998-01-01 DOI: 10.1364/cleo_europe.1998.cpd2.6
A. Donval, E. Toussacre, S. Brasselet, J. Zyss
{"title":"In-Plane Modulation of non Linear Polymer Devices: Comparison of Electric, Photo-Assisted and Photoinduced Poling Processes","authors":"A. Donval, E. Toussacre, S. Brasselet, J. Zyss","doi":"10.1364/cleo_europe.1998.cpd2.6","DOIUrl":"https://doi.org/10.1364/cleo_europe.1998.cpd2.6","url":null,"abstract":"Electrooptical polymer waveguide devices can be easily achieved by simple spin coating of polymer layers, with a transparent polymeric matrix as the passive buffer layer and with a side chain polymer as the active guiding layer. After deposition, the material is centrosymmetric, and therefore deprive of second order property. In order to create a noncentrosymmetric EO active material, a classical poling procedure may be adapted, whereby an electrical static field at elevated temperature, is applied over the side chain polymer resulting in the polar alignment of the chromophores parallel to the substrate.","PeriodicalId":10610,"journal":{"name":"Conference on Lasers and Electro-Optics Europe","volume":"61 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80423906","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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