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The Four-Photon Parametric Superfluorescence Induced by Conical Pump Pulses in Sodium Vapour 钠蒸气中锥形泵脉冲诱导的四光子参量超荧光
CLEO/Europe Conference on Lasers and Electro-Optics Pub Date : 1998-09-14 DOI: 10.1109/CLEOE.1998.719420
V. Vaičaitis, A. Stabinis, A. Piskarskas
{"title":"The Four-Photon Parametric Superfluorescence Induced by Conical Pump Pulses in Sodium Vapour","authors":"V. Vaičaitis, A. Stabinis, A. Piskarskas","doi":"10.1109/CLEOE.1998.719420","DOIUrl":"https://doi.org/10.1109/CLEOE.1998.719420","url":null,"abstract":"The investigations of parametric interactions under the conically focused pump beams are of broad interest mainly due to the possibility of efficient modification of the generated radiation divergence [1] significantly improving it’s spatial and time coherence.","PeriodicalId":404067,"journal":{"name":"CLEO/Europe Conference on Lasers and Electro-Optics","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114844512","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
Broadly Tunable Laser Spectrometer for Trace Gas Detection Based on Critically Phase-Matched Difference-Frequency Generation in Bulk LiNbO/sub 3/ 基于临界相位匹配差频生成的宽可调谐激光光谱仪在体LiNbO/sub /中的痕量气体检测
CLEO/Europe Conference on Lasers and Electro-Optics Pub Date : 1998-09-14 DOI: 10.1109/CLEOE.1998.719609
M. Seiter, D. Keller, M. Sigrist
{"title":"Broadly Tunable Laser Spectrometer for Trace Gas Detection Based on Critically Phase-Matched Difference-Frequency Generation in Bulk LiNbO/sub 3/","authors":"M. Seiter, D. Keller, M. Sigrist","doi":"10.1109/CLEOE.1998.719609","DOIUrl":"https://doi.org/10.1109/CLEOE.1998.719609","url":null,"abstract":"The selective and sensitive detection of trace gases in multicomponent gas mixtures by means of absorption spectroscopy requires narrowband continuously tunable laser sources. Using a cw External Cavity Diode Laser (ECDL), tunable between 795 and 825 nm as pump wave, and a diode-pumped monolithic cw Nd:YAG laser at 1064 nm as signal wave, we produce narrowband (a few MHz) mid infrared laser light between 3.16 and 3.67 μm by Difference-Frequency Generation (DFG) in bulk LiNbO3. Many compounds of interest (CH4, H2CO, …) show characteristic strong absorptions in this fundamental wavelength region. A multipass cell employed as a gas chamber with an effective path length of 36 m is used in combination with sensitive IR detectors for recording absorption spectra. True multicomponent capability of such a laser spectrometer requires a broad, narrowband, continuous tunability in the mid-IR.","PeriodicalId":404067,"journal":{"name":"CLEO/Europe Conference on Lasers and Electro-Optics","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124342035","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
Anisotropies and Intensity Saturation of Gray-Tracking in KTiOPO/sub 4/ KTiOPO/ sub4 /中灰度跟踪的各向异性和强度饱和度
CLEO/Europe Conference on Lasers and Electro-Optics Pub Date : 1998-09-14 DOI: 10.1109/CLEOE.1998.719202
I. Rousseau, B. Boulanger, J. Fève, B. Ménaert, G. Marnier
{"title":"Anisotropies and Intensity Saturation of Gray-Tracking in KTiOPO/sub 4/","authors":"I. Rousseau, B. Boulanger, J. Fève, B. Ménaert, G. Marnier","doi":"10.1109/CLEOE.1998.719202","DOIUrl":"https://doi.org/10.1109/CLEOE.1998.719202","url":null,"abstract":"","PeriodicalId":404067,"journal":{"name":"CLEO/Europe Conference on Lasers and Electro-Optics","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124498153","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
Fast Diagnostics of Ignition Processes by Excimer Laser Induced Fluorscence of Formaldehyde 准分子激光诱导甲醛荧光快速诊断引燃过程
CLEO/Europe Conference on Lasers and Electro-Optics Pub Date : 1998-09-14 DOI: 10.1109/CLEOE.1998.719624
D. Grebner, D. Muller, W. Triebel
{"title":"Fast Diagnostics of Ignition Processes by Excimer Laser Induced Fluorscence of Formaldehyde","authors":"D. Grebner, D. Muller, W. Triebel","doi":"10.1109/CLEOE.1998.719624","DOIUrl":"https://doi.org/10.1109/CLEOE.1998.719624","url":null,"abstract":"Laser induced fluorescence (LIF) has been widely used for nonintrusive diagnostics of combustion processes in engines, furnaces and turbines [1]. The best way to reduce pollutant production in such devices is to avoid high temperature peaks during combustion and to develop lean premixed combustion devices without spontaneous ignition. The LIF of intermediates as formaldehyde can be used to study ignition processes. Especially the hot spot formation leading to knocking combustion was analyzed [2]. This measurements were performed using dye laser systems, but the handling of these systems in technical environments is difficult. In contrast powerful UV excimer lasers are mostly applied in the diagnostics of technical systems. Two dimensional concentration fields of various combustion species as OH, O2 or NO could be registered [1].","PeriodicalId":404067,"journal":{"name":"CLEO/Europe Conference on Lasers and Electro-Optics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121916286","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
Diffractive Optical Elements for Beam-Shaping Tasks in Solid-State Laser Systems 用于固体激光系统光束整形任务的衍射光学元件
CLEO/Europe Conference on Lasers and Electro-Optics Pub Date : 1998-09-14 DOI: 10.1109/CLEOE.1998.719566
I. Barton, P. Blair, A. Waddie, K. Ballueder, H. McKinnes, T. Bett
{"title":"Diffractive Optical Elements for Beam-Shaping Tasks in Solid-State Laser Systems","authors":"I. Barton, P. Blair, A. Waddie, K. Ballueder, H. McKinnes, T. Bett","doi":"10.1109/CLEOE.1998.719566","DOIUrl":"https://doi.org/10.1109/CLEOE.1998.719566","url":null,"abstract":"We apply diffractive optical elements (DOEs) to a number of laser beam-shaping tasks. These tasks include customisation of the modes of a laser resonator, lensless beam propagation and a free-space Gaussian to flattop beam conversion. DOEs are inherently suited for operation with high-power solid-state lasers systems due to their excellent functionality and efficiency, and the high damage threshold of fused silica.","PeriodicalId":404067,"journal":{"name":"CLEO/Europe Conference on Lasers and Electro-Optics","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127932998","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
Self-Pulsation and Mode-Locking in Narrow Stripe Lasers 窄条纹激光器的自脉冲和锁模
CLEO/Europe Conference on Lasers and Electro-Optics Pub Date : 1998-09-14 DOI: 10.1109/CLEOE.1998.719267
J. Dubbeldam, D. Lenstra
{"title":"Self-Pulsation and Mode-Locking in Narrow Stripe Lasers","authors":"J. Dubbeldam, D. Lenstra","doi":"10.1109/CLEOE.1998.719267","DOIUrl":"https://doi.org/10.1109/CLEOE.1998.719267","url":null,"abstract":"Self-sustained pulsation phenomena were first observed in degraded lasers. Narrow stripe lasers also show this self-pulsating behavior. Although rate-equation models predicting the self-pulsations exist, a more physical explanation of the self-pulsations is still lacking. Since self-sustained pulsations can also be obtained in structures with an unpumped region in the longitudinal direction of the laser, which then acts as a saturable absorber, the connection with saturable absorber mode-locking is tempting.","PeriodicalId":404067,"journal":{"name":"CLEO/Europe Conference on Lasers and Electro-Optics","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132409668","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
WDM Networking: Lessons from ACTS OPEN Field Trials WDM网络:ACTS公开现场试验的经验教训
CLEO/Europe Conference on Lasers and Electro-Optics Pub Date : 1998-09-14 DOI: 10.1109/CLEOE.1998.719139
M. Chbat, P. Goedsvang, A. Jourdan, A. Leciert, T. Olsen
{"title":"WDM Networking: Lessons from ACTS OPEN Field Trials","authors":"M. Chbat, P. Goedsvang, A. Jourdan, A. Leciert, T. Olsen","doi":"10.1109/CLEOE.1998.719139","DOIUrl":"https://doi.org/10.1109/CLEOE.1998.719139","url":null,"abstract":"The ACTS OPEN project aims at the assessment of the feasibility of an Optical Pan-European overlay Network (OPEN), interconnecting major European cities by means of a mesh of high-capacity optical fibre links cross-connected through transparent photonic nodes, making an extensive use of WDM for both transmission and networking. Two cross-border field trials have been scheduled to assess this concept:\u0000 • The first one, linking Oslo in Norway (N) with Hjerring and Thisted in Denmark (Dk) via a mix of terrestrial (G.652) and submarine (G.653) types of fibre has been carried out from October to December 1997.\u0000 • The second one, linking Paris in France (F) with Brussels in Belgium (B), via a terrestrial standard fibre cable will be initiated February 1998.","PeriodicalId":404067,"journal":{"name":"CLEO/Europe Conference on Lasers and Electro-Optics","volume":"619 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132518580","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 Waveguide Sensor for the Determination of the Refractive Index of Liquids in the Near Infrared 非线性波导传感器用于近红外液体折射率的测定
CLEO/Europe Conference on Lasers and Electro-Optics Pub Date : 1998-09-14 DOI: 10.1109/CLEOE.1998.719161
R. Ramponi, M. Marangoni, R. Osellame, V. Russo
{"title":"Nonlinear Waveguide Sensor for the Determination of the Refractive Index of Liquids in the Near Infrared","authors":"R. Ramponi, M. Marangoni, R. Osellame, V. Russo","doi":"10.1109/CLEOE.1998.719161","DOIUrl":"https://doi.org/10.1109/CLEOE.1998.719161","url":null,"abstract":"The knowledge of the refractive index of liquids is of major importance in many application fields and therefore several methods have been proposed to achieve high precision and accuracy. Although most methods can in principle be used both in the visible and in outer ranges (e g. in the infrared), they have typically been tested only in the visible, mainly due to experimental difficulties, and values in the infrared have been obtained by extrapolation.","PeriodicalId":404067,"journal":{"name":"CLEO/Europe Conference on Lasers and Electro-Optics","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134147164","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
DPSSL with 2D Intracavity Beam Scanning Using Liquid Crystal Spatial Light Modulators 利用液晶空间光调制器进行二维腔内光束扫描的DPSSL
CLEO/Europe Conference on Lasers and Electro-Optics Pub Date : 1998-09-14 DOI: 10.1109/CLEOE.1998.719183
V. Berenberg, A. Kornev, A. Onokhov, V. Pokrovskiy, L. Soms, V. Stoupnikov
{"title":"DPSSL with 2D Intracavity Beam Scanning Using Liquid Crystal Spatial Light Modulators","authors":"V. Berenberg, A. Kornev, A. Onokhov, V. Pokrovskiy, L. Soms, V. Stoupnikov","doi":"10.1109/CLEOE.1998.719183","DOIUrl":"https://doi.org/10.1109/CLEOE.1998.719183","url":null,"abstract":"The laser beam spatial distribution control can be obtained by the placing a Spatial Light Modulator (SLM) inside a special laser cavity. The opened pixels of the SLM determine the generating modes configuration (such SLM can be called \"driven mirror\"). The earlier works [1,2] has shown the possibility to obtain output energy level of solid-state scanning laser of several Joules on Q-switch operation, and high speed of scanning. At the same time, 2D random-addressing of laser beam by the single computer-driven SLM unit was the problem unsolved.","PeriodicalId":404067,"journal":{"name":"CLEO/Europe Conference on Lasers and Electro-Optics","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134211880","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
Novel Gas Sensor Based on Difference Frequency Mixing Using All Fibre Beam Delivery 基于全光纤光束传输差频混频的新型气体传感器
CLEO/Europe Conference on Lasers and Electro-Optics Pub Date : 1998-09-14 DOI: 10.1109/CLEOE.1998.719158
D. Lancaster, R. Curl, F. Tittel, L. Goldberg, J. Koplow
{"title":"Novel Gas Sensor Based on Difference Frequency Mixing Using All Fibre Beam Delivery","authors":"D. Lancaster, R. Curl, F. Tittel, L. Goldberg, J. Koplow","doi":"10.1109/CLEOE.1998.719158","DOIUrl":"https://doi.org/10.1109/CLEOE.1998.719158","url":null,"abstract":"Tunable infrared laser absorption spectroscopy has proven to be a powerful technique for accurately determining the real time concentrations of trace pollutants in both point monitoring and open path configurations (1). For the detection of molecules including many of the common pollutants, and most of the hydrocarbons, the key spectral region for absorption spectroscopy is in the mid-infrared (3-5 μm).","PeriodicalId":404067,"journal":{"name":"CLEO/Europe Conference on Lasers and Electro-Optics","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127584113","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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