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High Energy Density Physics with Subpicosecond Laser Pulses最新文献

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Ultrashort Pulse Laser Heating of Solids 固体的超短脉冲激光加热
High Energy Density Physics with Subpicosecond Laser Pulses Pub Date : 1900-01-01 DOI: 10.1364/hpslp.1989.w10
R. Falcone, M. Murnane, H. Kapteyn
{"title":"Ultrashort Pulse Laser Heating of Solids","authors":"R. Falcone, M. Murnane, H. Kapteyn","doi":"10.1364/hpslp.1989.w10","DOIUrl":"https://doi.org/10.1364/hpslp.1989.w10","url":null,"abstract":"Ultrashort pulse lasers have been used to heat solid and near solid density plasmas to several hundred volt electron temperatures. The relevant absorption mechanisms and the behavior of material in these conditions are discussed.","PeriodicalId":417306,"journal":{"name":"High Energy Density Physics with Subpicosecond Laser Pulses","volume":"22 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":"126240140","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
Ultra-high Intensity Lasers and Experiments at Los Alamos 超高强度激光与洛斯阿拉莫斯实验
High Energy Density Physics with Subpicosecond Laser Pulses Pub Date : 1900-01-01 DOI: 10.1364/hpslp.1989.t5
G. Schappert, D. Casperson, J. Cobble, L. A. Jones, G. A. Kyrala, P. Lee, T. D. Nichols, A. Taylor, C. Tallman
{"title":"Ultra-high Intensity Lasers and Experiments at Los Alamos","authors":"G. Schappert, D. Casperson, J. Cobble, L. A. Jones, G. A. Kyrala, P. Lee, T. D. Nichols, A. Taylor, C. Tallman","doi":"10.1364/hpslp.1989.t5","DOIUrl":"https://doi.org/10.1364/hpslp.1989.t5","url":null,"abstract":"Recent developments in excimer laser technology have made it possible to achieve irradiances on target approaching 1020 W/cm2. Oscillators capable of generating subpicosecond pulses and amplifiers capable of amplifying these pulses without significant pulse stretching or optical distortion are now available. Hence ultrashort pulses of modest energies, focused to nearly-diffraction-limited spots a few microns in diameter, result in an irradiance in excess of 1019 W/cm2. Such laser systems typically operate at a repetition rate of several Hz, ideal for experimental programs.","PeriodicalId":417306,"journal":{"name":"High Energy Density Physics with Subpicosecond Laser Pulses","volume":"24 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":"127802117","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 Quality, Ultrahigh Instensity Lasers for Tomorrow's Ultrahigh Field Experiments 用于未来超高场实验的高质量、超高强度激光器
High Energy Density Physics with Subpicosecond Laser Pulses Pub Date : 1900-01-01 DOI: 10.1364/hpslp.1989.t2
G. Mourou
{"title":"High Quality, Ultrahigh Instensity Lasers for Tomorrow's Ultrahigh Field Experiments","authors":"G. Mourou","doi":"10.1364/hpslp.1989.t2","DOIUrl":"https://doi.org/10.1364/hpslp.1989.t2","url":null,"abstract":"The CPA concept has been demonstrated with Nd:glass and alexandrite media. Pulses as powerful as TW have been produced with compact laser systems. In the near future PW pulses will be generated. As the laser power increases to these extreme levels, the temporal quality, i.e. pulse contrast and control of ASE, will have to improve accordingly, propagation in air kept to a minimum. We disucss the fundamental considerations to achieve ultrahigh intensities with the highest spatial and temporal quality necessary to perform experiments in the 1020–1023 W/cm2 regime.","PeriodicalId":417306,"journal":{"name":"High Energy Density Physics with Subpicosecond Laser Pulses","volume":"12 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":"132614089","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
3d Particle Simulation on Interaction of Ultrashort Laser Pulse with Solid Density Hydrogen Plasma 超短激光脉冲与固体密度氢等离子体相互作用的三维粒子模拟
High Energy Density Physics with Subpicosecond Laser Pulses Pub Date : 1900-01-01 DOI: 10.1364/hpslp.1989.pdp6
K. Nishihara, H. Yasui
{"title":"3d Particle Simulation on Interaction of Ultrashort Laser Pulse with Solid Density Hydrogen Plasma","authors":"K. Nishihara, H. Yasui","doi":"10.1364/hpslp.1989.pdp6","DOIUrl":"https://doi.org/10.1364/hpslp.1989.pdp6","url":null,"abstract":"The interaction of very short laser pulses with matter has become an important field.1,2)If a pulse duration of a laser light is so short that no significant hydrodynamic expansion of a matter takes place, the electric field of a laser interacts directly with a solid density matter. The mean ion distance, a~ (3/4πni)1/3is of the order of one angstrom at a solid density. The quivering distance of electrons oscillating at a laser frequency, \u0000 \u0000 \u0000 \u0000 \u0000 δx=eE\u0000 \u0000 0\u0000 \u0000 /\u0000 \u0000 \u0000 mω\u0000 \u0000 0\u0000 2\u0000 \u0000 \u0000 \u0000 , exceeds the mean ion distance at a high intensity. In addition to that, the ion coupling coefficient, Γ=eϕ/kt=z2e2/akt, is of the order of one for such high density plasma. Thus the oscillating electrons interact with many ions and electrons at the same time, because ions and electrons are also strongly correlated.","PeriodicalId":417306,"journal":{"name":"High Energy Density Physics with Subpicosecond Laser Pulses","volume":"46 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132478048","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
New Domain of Strong-Field Coupling: Production of Super-Excited States* 强场耦合的新领域:超激发态的产生*
High Energy Density Physics with Subpicosecond Laser Pulses Pub Date : 1900-01-01 DOI: 10.1364/hpslp.1989.m8
G. Gibson, T. S. Luk, A. Mcpherson, K. Boyer, C. Rhodes
{"title":"New Domain of Strong-Field Coupling: Production of Super-Excited States*","authors":"G. Gibson, T. S. Luk, A. Mcpherson, K. Boyer, C. Rhodes","doi":"10.1364/hpslp.1989.m8","DOIUrl":"https://doi.org/10.1364/hpslp.1989.m8","url":null,"abstract":"A new transition at 55.8 nm (22.2 eV) has been observed in\u0000 \u0000 \u0000 \u0000 \u0000 N\u0000 2\u0000 \u0000 2\u0000 +\u0000 \u0000 \u0000 \u0000 \u0000 arising\u0000 from multiphoton excitation of N2 with intense\u0000 subpicosecond 248-nm radiation. The band has an observed width of ~\u0000 0.3 nm FWHM, exhibits vibrational splittings, has an estimated\u0000 radiative lifetime of ~ 100 ps, and is attributed to a\u0000 3Πu→ 3Πg excimer-like\u0000 transition arising from the direct multiphoton production of molecular\u0000 levels having a 2σg vacancy. The upper level has a\u0000 \u0000 \u0000 \u0000 \u0000 (\u0000 \u0000 2\u0000 \u0000 σ\u0000 g\u0000 \u0000 \u0000 \u0000 \u0000 −\u0000 1\u0000 \u0000 \u0000 ,\u0000 1\u0000 \u0000 π\u0000 u\u0000 \u0000 −\u0000 1\u0000 \u0000 \u0000 \u0000 )\u0000 \u0000 \u0000 \u0000 \u0000 configuration, an equilibrium internuclear separation of ~ 1.2 Å, and\u0000 results from an entirely new strong-field mode of electronic\u0000 excitation.","PeriodicalId":417306,"journal":{"name":"High Energy Density Physics with Subpicosecond Laser Pulses","volume":"15 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":"116601788","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
Direct Measurement of the Duration of Sub-Picosecond Soft X-Ray Pulse 亚皮秒软x射线脉冲持续时间的直接测量
High Energy Density Physics with Subpicosecond Laser Pulses Pub Date : 1900-01-01 DOI: 10.1364/hpslp.1989.pdp3
L. V. Van Woerkom, R. Freeman, S. Davey, W. Cooke, T. Mcilrath
{"title":"Direct Measurement of the Duration of Sub-Picosecond Soft X-Ray Pulse","authors":"L. V. Van Woerkom, R. Freeman, S. Davey, W. Cooke, T. Mcilrath","doi":"10.1364/hpslp.1989.pdp3","DOIUrl":"https://doi.org/10.1364/hpslp.1989.pdp3","url":null,"abstract":"We have measured, with 100 fsec resolution, the sub-picosecond pulse duration of a soft-xray pulse produced from a laser plasma driven by a high intensity, 300 fsec 308 nm laser. The technique employs the cross correlation of a 100 fsec 616 nm laser pulse with the x-ray pulse in high density krypton. The 616nm laser pulse effectively \" switches\" the absorption of the x-rays in the krypton off and on with a resolution exactly equal to its pulse duration.","PeriodicalId":417306,"journal":{"name":"High Energy Density Physics with Subpicosecond Laser Pulses","volume":"26 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":"116054592","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
Hot Electron Relaxation in Metals 金属中的热电子弛豫
High Energy Density Physics with Subpicosecond Laser Pulses Pub Date : 1900-01-01 DOI: 10.1364/hpslp.1989.w7
H. Elsayed-Ali
{"title":"Hot Electron Relaxation in Metals","authors":"H. Elsayed-Ali","doi":"10.1364/hpslp.1989.w7","DOIUrl":"https://doi.org/10.1364/hpslp.1989.w7","url":null,"abstract":"When a metal is subjected to a transient event (femtosecond lasers, a fast electrical current, or energetic charged particles), energy is initially coupled to the electron gas. Hot electrons then transfer their energy to the lattice by inelastic collisions or exit the surface of the metal by a single-photon or a multi-photon photoemission (Fig. 1). For conditions discussed here, energy loss by photoemission is significantly smaller than that due to inelastic collisions so that it can be neglected. The possibility of creating nonequilibrium heating conditions where hot electrons can be generated in metals during the passage of ionizing radiation was postulated many years ago.1 The advent of ultrafast lasers has made accessible the generation and the study of such a nonequilibrium state.","PeriodicalId":417306,"journal":{"name":"High Energy Density Physics with Subpicosecond Laser Pulses","volume":"41 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":"115407068","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
Observations of High Density Plasmas Produced with a Picosecond, High Power KrF Laser 皮秒高功率KrF激光器产生高密度等离子体的观察
High Energy Density Physics with Subpicosecond Laser Pulses Pub Date : 1900-01-01 DOI: 10.1364/hpslp.1989.t3
O. Willi, G. Kiehn, J. Edwards, V. Barrow, R. Smith
{"title":"Observations of High Density Plasmas Produced with a Picosecond, High Power KrF Laser","authors":"O. Willi, G. Kiehn, J. Edwards, V. Barrow, R. Smith","doi":"10.1364/hpslp.1989.t3","DOIUrl":"https://doi.org/10.1364/hpslp.1989.t3","url":null,"abstract":"The interaction of a single picosecond, high power KrF laser pulse with solid targets has been studied using time integrated and time resolved x-ray spectroscopy. Fully ionised aluminium plasmas with temperatures of about 400 eV and densities well above 1023 cm−3 were observed when the ASE prepulse energy was less than 10−5 of the short pulse. About 20% of the incident laser energy was deposited in suprathermal electrons. This value was inferred from titanium Kα emission measurements. The experimental observations were modelled with a 1-D Lagrangian hydrodynamics code.","PeriodicalId":417306,"journal":{"name":"High Energy Density Physics with Subpicosecond Laser Pulses","volume":"T161 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":"125667123","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
The Interaction of Intense Laser Pulses in Plasmas 强激光脉冲在等离子体中的相互作用
High Energy Density Physics with Subpicosecond Laser Pulses Pub Date : 1900-01-01 DOI: 10.1364/hpslp.1989.m3
P. Sprangle, E. Esarey, A. Ting
{"title":"The Interaction of Intense Laser Pulses in Plasmas","authors":"P. Sprangle, E. Esarey, A. Ting","doi":"10.1364/hpslp.1989.m3","DOIUrl":"https://doi.org/10.1364/hpslp.1989.m3","url":null,"abstract":"The interaction of ultra-high power laser beams with plasmas is rich in a variety of wave-particle phenomena. These phenomena become particularly interesting and involved when the laser power is high enough to cause the electron oscillation velocity to become highly relativistic. Some of the interesting laser-plasma processes which will be discussed include i) the production of large amplitude plasma waves which could be used to accelerate electrons to ultra-high energies; ii) the possibility of modifying the plasma refractive properties in order to achieve optical guiding of a laser pulse, thus preventing the laser pulse from diffracting; and iii) the possibility of producing coherent radiation at harmonics of the incident laser frequency.","PeriodicalId":417306,"journal":{"name":"High Energy Density Physics with Subpicosecond Laser Pulses","volume":"51 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":"127213649","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
Measurement of Electron Temperature in Hot, Solid Density Plasmas 热固体密度等离子体中电子温度的测量
High Energy Density Physics with Subpicosecond Laser Pulses Pub Date : 1900-01-01 DOI: 10.1364/hpslp.1989.w2
H. Milchberg, R. Freeman
{"title":"Measurement of Electron Temperature in Hot, Solid Density Plasmas","authors":"H. Milchberg, R. Freeman","doi":"10.1364/hpslp.1989.w2","DOIUrl":"https://doi.org/10.1364/hpslp.1989.w2","url":null,"abstract":"The interaction of ultrashort energetic light pulses with solids is of great interest both as a source of picosecond timescale X-ray pulses1 and as a new and interesting regime of plasma and solid state physics.2,3","PeriodicalId":417306,"journal":{"name":"High Energy Density Physics with Subpicosecond Laser Pulses","volume":"49 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":"131276670","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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