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Shortwavelength V: Physics with Intense Laser Pulses最新文献

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Strong Kα Emission in Picosecond Laser-Plasma Interactions 皮秒激光等离子体相互作用中的强Kα发射
Shortwavelength V: Physics with Intense Laser Pulses Pub Date : 1993-11-01 DOI: 10.1063/1.354240
B. Soom, Hong Chen, Y. Fisher, D. Meyerhofer
{"title":"Strong Kα Emission in Picosecond Laser-Plasma Interactions","authors":"B. Soom, Hong Chen, Y. Fisher, D. Meyerhofer","doi":"10.1063/1.354240","DOIUrl":"https://doi.org/10.1063/1.354240","url":null,"abstract":"Kα emission is observed from the interaction of a\u0000 picosecond, 1.05-μm laser pulse at 4 × 1015\u0000 W/cm2 with a silicon target coated with various thicknesses\u0000 of aluminum. Strong Kα emission requires a p-polarized,\u0000 high-intensity-contrast laser pulse. At 7.1 Å, the Kα yield\u0000 is 1.5 × 108 photon/sr with a duration of emission of ~8 ps\u0000 and a source area of 1.6 × 10‒6 cm2.\u0000 The radiance is ~3 × 109 W/cm2 sr. Monte-Carlo\u0000 simulations have suggested that under these conditions Kα\u0000 emission is a promising candidate to obtain an efficient, ultrashort\u0000 x-ray source at ~1.5 Å.","PeriodicalId":140696,"journal":{"name":"Shortwavelength V: Physics with Intense Laser Pulses","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121376228","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: 28
Quantum and Quasi-Classical Analyses of High Order Emission Processes 高阶发射过程的量子和准经典分析
Shortwavelength V: Physics with Intense Laser Pulses Pub Date : 1993-06-01 DOI: 10.1364/swv.1993.h108
K. Schafer, K. Kulander
{"title":"Quantum and Quasi-Classical Analyses of High Order Emission Processes","authors":"K. Schafer, K. Kulander","doi":"10.1364/swv.1993.h108","DOIUrl":"https://doi.org/10.1364/swv.1993.h108","url":null,"abstract":"High-order harmonic generation from atoms and ions cuts off in accord\u0000 with the simple rule:\u0000 E\u0000 c\u0000 ~\u0000 I\u0000 p\u0000 +\u0000 3U\u0000 p\u0000 . This cutoff rule as well as\u0000 the lack of a cutoff in high-order electron energy\u0000 spectra can be understood via a simple extension of existing two step\u0000 quasi-classical models.","PeriodicalId":140696,"journal":{"name":"Shortwavelength V: Physics with Intense Laser Pulses","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125738939","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
Electron Energy Distributions in Plasmas Produced by Intense Short-Pulse Lasers 强短脉冲激光等离子体中的电子能量分布
Shortwavelength V: Physics with Intense Laser Pulses Pub Date : 1993-05-02 DOI: 10.1364/swv.1993.sti189
T. Glover, J. Crane, M. Perry, R. Falcone
{"title":"Electron Energy Distributions in Plasmas Produced by Intense Short-Pulse Lasers","authors":"T. Glover, J. Crane, M. Perry, R. Falcone","doi":"10.1364/swv.1993.sti189","DOIUrl":"https://doi.org/10.1364/swv.1993.sti189","url":null,"abstract":"We report the first measurements of time-resolved electron energy distributions in plasmas of interest to recently proposed x-ray laser schemes.","PeriodicalId":140696,"journal":{"name":"Shortwavelength V: Physics with Intense Laser Pulses","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123376818","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
Femtosecond Variable-Angle Spectro-Ellipsometry of a Rarefaction Wave Front 稀疏波前的飞秒变角光谱-椭圆偏振
Shortwavelength V: Physics with Intense Laser Pulses Pub Date : 1993-05-02 DOI: 10.1364/swv.1993.sti216
H. Ahn, X. Y. Wang, M. Downer
{"title":"Femtosecond Variable-Angle Spectro-Ellipsometry of a Rarefaction Wave Front","authors":"H. Ahn, X. Y. Wang, M. Downer","doi":"10.1364/swv.1993.sti216","DOIUrl":"https://doi.org/10.1364/swv.1993.sti216","url":null,"abstract":"Intense femtosecond (fs) irradiation of a solid surface creates transient (~ Mbar) internal pressure in the absorption region because the lattice is heated faster than thermal expansion can occur. Before the pressure is released (Δt ~ 1-2 ps) the heated surface remains optically sharp, so that time-resolved ellipsometric measurements can be analyzed with Fresnel’s equations, revealing the optical properties of novel pressurized fluids such as liquid carbon1,2 At later times (2 ps < Δt < 20 ps), a rarefaction wave front develops at the surface, as the laser induced strong compressional shock wave acts on the solid density plasma. The expansion dynamics can provide diagnostic information on initial pressure-temperature conditions. This expanding rarefaction wave front can also be probed by time-resolved ellipsometry measurements, provided they are analyzed by generalized Helmholtz wave equations3. We recently presented preliminary time-resolved reflectivity measurements of hydrodynamically expanding metal surfaces using a single probe wavelength (620 nm) and incidence angle (70°)4. In this paper, we report comprehensive measurements on free electron metals (Al, Ag), semiconductor (Si), and semimetal (C, graphite) targets using variable probe incidence angle, wavelength, and polarization. Such measurements permit our theoretical model of rarefaction wave structure, dielectric properties, and expansion dynamics to be defined much more quantitatively.","PeriodicalId":140696,"journal":{"name":"Shortwavelength V: Physics with Intense Laser Pulses","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114208743","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
Independent Adjustment of the Higher Order Frequency Dependent Phase in Chirped Pulse Amplification Systems 啁啾脉冲放大系统中高阶频率相关相位的独立调节
Shortwavelength V: Physics with Intense Laser Pulses Pub Date : 1993-04-14 DOI: 10.1364/swv.1993.uils36
W. White, F. Patterson, R. Combs, L. Seppala, D. Price, R. Shepherd, D. Reitze
{"title":"Independent Adjustment of the Higher Order Frequency Dependent Phase in Chirped Pulse Amplification Systems","authors":"W. White, F. Patterson, R. Combs, L. Seppala, D. Price, R. Shepherd, D. Reitze","doi":"10.1364/swv.1993.uils36","DOIUrl":"https://doi.org/10.1364/swv.1993.uils36","url":null,"abstract":"We have developed a system that allows compensation of higher order phase terms that limit chirped pulse amplification systems. Results indicate phase can be compensated by a properly adjusted air-spaced doublet within the stretcher.","PeriodicalId":140696,"journal":{"name":"Shortwavelength V: Physics with Intense Laser Pulses","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123098051","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 Dependence of the Ionization of Helium and Neon by 120 Femtosecond Pulses at 614 nm 氦和氖在614 nm处120飞秒脉冲电离的偏振依赖性
Shortwavelength V: Physics with Intense Laser Pulses Pub Date : 1993-03-03 DOI: 10.1364/swv.1993.fp75
D. Fittinghoff, P. Bolton
{"title":"Polarization Dependence of the Ionization of Helium and Neon by 120 Femtosecond Pulses at 614 nm","authors":"D. Fittinghoff, P. Bolton","doi":"10.1364/swv.1993.fp75","DOIUrl":"https://doi.org/10.1364/swv.1993.fp75","url":null,"abstract":"A strong polarization dependence is observed for the helium and neon ion yields for the higher charge states produced by 120-fs pulses of 614-nm light.","PeriodicalId":140696,"journal":{"name":"Shortwavelength V: Physics with Intense Laser Pulses","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116552705","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
Germanium Soft X-Ray Laser in a Wall-Confined Laser Produced Plasma 壁限激光产生等离子体中的锗软x射线激光器
Shortwavelength V: Physics with Intense Laser Pulses Pub Date : 1993-03-01 DOI: 10.1364/swv.1993.sti206
H. Daido, R. Kodama, K. Murai, G. Yuan, M. Schulz, M. Takagi, Y. Kato, S. Nakai, D. Neely, A. MacPhee, C. Lewis
{"title":"Germanium Soft X-Ray Laser in a Wall-Confined Laser Produced Plasma","authors":"H. Daido, R. Kodama, K. Murai, G. Yuan, M. Schulz, M. Takagi, Y. Kato, S. Nakai, D. Neely, A. MacPhee, C. Lewis","doi":"10.1364/swv.1993.sti206","DOIUrl":"https://doi.org/10.1364/swv.1993.sti206","url":null,"abstract":"An intense soft x-ray laser (wavelength : mainly 23.6 nm) was produced in a wall-confined germanium plasma pumped by a line focused laser having an energy of 1.3 kJ, with a pulse duration of 1 ns and a wavelength of 1 µm.","PeriodicalId":140696,"journal":{"name":"Shortwavelength V: Physics with Intense Laser Pulses","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124836941","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
Self-Focusing of Intense Subpicosecond Laser Pulses in a Low Pressure Gas 亚皮秒强激光脉冲在低压气体中的自聚焦
Shortwavelength V: Physics with Intense Laser Pulses Pub Date : 1900-01-01 DOI: 10.1364/swv.1993.puip45
X. Liu, D. Umstadter
{"title":"Self-Focusing of Intense Subpicosecond Laser Pulses in a Low Pressure Gas","authors":"X. Liu, D. Umstadter","doi":"10.1364/swv.1993.puip45","DOIUrl":"https://doi.org/10.1364/swv.1993.puip45","url":null,"abstract":"Multiple foci formation in a gas cell with a high peak power, subpicosecond laser is reported. It results from the combined effects of nonlinear refractive index and defocusing by the laser-generated plasma.","PeriodicalId":140696,"journal":{"name":"Shortwavelength V: Physics with Intense Laser Pulses","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117113957","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
Time Resolved Spectroscopy of Ultrashort Plasmas 超短等离子体的时间分辨光谱学
Shortwavelength V: Physics with Intense Laser Pulses Pub Date : 1900-01-01 DOI: 10.1364/swv.1993.sti196
J. Kieffer, Y. Beaudoin, M. Chaker, C. Cote, Z. Jiang, T. Johnston, J. Matte, H. Pépin, C. Chien, S. Coe, G. Mourou, O. Peyrusse, A. Mens, R. Verrecchia, R. Sauneuf, D. Schirmann, J. Dubau
{"title":"Time Resolved Spectroscopy of Ultrashort Plasmas","authors":"J. Kieffer, Y. Beaudoin, M. Chaker, C. Cote, Z. Jiang, T. Johnston, J. Matte, H. Pépin, C. Chien, S. Coe, G. Mourou, O. Peyrusse, A. Mens, R. Verrecchia, R. Sauneuf, D. Schirmann, J. Dubau","doi":"10.1364/swv.1993.sti196","DOIUrl":"https://doi.org/10.1364/swv.1993.sti196","url":null,"abstract":"X-ray diagnostics are employed to characterize a plasma produced by a\u0000 high contrast subpicosecond laser at intensities between\u0000 1016 W/cm2 and 1018 W/cm2.\u0000 The plasma dynamics and the basic processes which control the duration\u0000 of the X-ray pulse are quantitatively studied by means of polarization\u0000 spectroscopy and time resolved spectroscopy with a picosecond temporal\u0000 resolution. The experimental results are discussed with time dependent\u0000 calculations of the atomic physics coupled to kinetic Fokker-Planck\u0000 modelling.","PeriodicalId":140696,"journal":{"name":"Shortwavelength V: Physics with Intense Laser Pulses","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117242525","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
Two-Color Harmonic Generation in the Rare Gases 稀有气体中双色谐波的产生
Shortwavelength V: Physics with Intense Laser Pulses Pub Date : 1900-01-01 DOI: 10.1364/swv.1993.h146
J. Crane, M. D. Perry, T. Ditmire, H. Nguyen, S. Herman
{"title":"Two-Color Harmonic Generation in the Rare Gases","authors":"J. Crane, M. D. Perry, T. Ditmire, H. Nguyen, S. Herman","doi":"10.1364/swv.1993.h146","DOIUrl":"https://doi.org/10.1364/swv.1993.h146","url":null,"abstract":"We observe very high-order sum and difference-frequency components when 1053 and 526 nm fields are mixed in a high density gas. We describe how the relative intensity and polarization of this XUV light is affected by the relative polarization of the input fields. Even harmonics are produced due to the breaking of radial symmetry in the atom by the additional field.","PeriodicalId":140696,"journal":{"name":"Shortwavelength V: Physics with Intense Laser Pulses","volume":"243 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121243669","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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