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Short-Wavelength Coherent Radiation: Generation and Application最新文献

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Photon accelerator: A novel method of frequency upshifting sub-picosecond laser pulses 光子加速器:一种频率上移亚皮秒激光脉冲的新方法
Short-Wavelength Coherent Radiation: Generation and Application Pub Date : 2008-06-04 DOI: 10.1063/1.38750
S. Wilks, T. Katsouleas, J. Dawson
{"title":"Photon accelerator: A novel method of frequency upshifting sub-picosecond laser pulses","authors":"S. Wilks, T. Katsouleas, J. Dawson","doi":"10.1063/1.38750","DOIUrl":"https://doi.org/10.1063/1.38750","url":null,"abstract":"Anovel method of frequency upshifting subpicosecond pulses of laser light, which makes use of relativistic plasma waves, is described in this paper. This method makes use of the fact that the response of a plasma to either a short laser pulse or a short relativistic electron beam is nearly identical. Thus, the wakefields, or electric fields, that are left behind in the plasma as either of these drivers pass, are also very similar. Since electron acceleration in plasma waves can effectively be thought of as the simple superposition of wakes, this analogy brings about the interesting question of whether the superposition of short laser pulse wakes would produce “acceleration” (or equivalently, frequency upshifting) of a trailing laser pulse. We estimate the rate of frequency upshift possible, and discuss some important physical limitations.","PeriodicalId":286766,"journal":{"name":"Short-Wavelength Coherent Radiation: Generation and Application","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124292114","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: 3
High Resolution Soft-X-Ray Projection Imaging 高分辨率软x射线投影成像
Short-Wavelength Coherent Radiation: Generation and Application Pub Date : 1992-05-22 DOI: 10.1364/swcr.1991.wb1
O. Wood, J. Bjorkholm, J. Bokor, L. Eichner, R. Freeman
{"title":"High Resolution Soft-X-Ray Projection Imaging","authors":"O. Wood, J. Bjorkholm, J. Bokor, L. Eichner, R. Freeman","doi":"10.1364/swcr.1991.wb1","DOIUrl":"https://doi.org/10.1364/swcr.1991.wb1","url":null,"abstract":"The principal motivation for carrying out projection imaging with soft-x-rays instead of with visible or ultraviolet light lies in the dramatic improvement in resolution that can be obtained (while maintaining a usable depth of focus). Although there are many reports of soft-x-ray imaging in the literature,1-6 soft-x-ray imaging with truly high resolution has only recently been demonstrated.7 In this talk we describe the results of several experiments which have demonstrated projection imaging in the soft-x-ray spectral region with a resolution approaching the Rayleigh limit, 1.22λ/2NA where λ is wavelength and NA is numerical aperture of the imaging system.","PeriodicalId":286766,"journal":{"name":"Short-Wavelength Coherent Radiation: Generation and Application","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126036523","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: 4
Four Wave Difference Frequency Generation at 124nm for High Resolution Photoabsorption Studies of O2 在124nm处产生四波差频用于O2的高分辨率光吸收研究
Short-Wavelength Coherent Radiation: Generation and Application Pub Date : 1992-05-22 DOI: 10.1364/swcr.1991.tua7
K. Baldwin, S. Gibson, B. Lewis, J. H. Carver
{"title":"Four Wave Difference Frequency Generation at 124nm for High Resolution Photoabsorption Studies of O2","authors":"K. Baldwin, S. Gibson, B. Lewis, J. H. Carver","doi":"10.1364/swcr.1991.tua7","DOIUrl":"https://doi.org/10.1364/swcr.1991.tua7","url":null,"abstract":"Previous VUV generation techniques used to carry out high resolution absorption and photodissociation spectroscopy of molecular oxygen have relied on stimulated anti-Stokes Raman scattering to produce tunable VUV radiation(1,2). However, such studies are limited in practice by low conversion efficiencies to wavelengths >1500A in the Schumann-Runge band and continuum region.","PeriodicalId":286766,"journal":{"name":"Short-Wavelength Coherent Radiation: Generation and Application","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126124720","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
Spatial Distribution of High Order Harmonics Generated in the Tunneling Regime 隧穿区高次谐波的空间分布
Short-Wavelength Coherent Radiation: Generation and Application Pub Date : 1992-05-22 DOI: 10.1364/swcr.1991.tua9
S. Augst, C. L. Moore, J. Peatross, D. Meyerhofer
{"title":"Spatial Distribution of High Order Harmonics Generated in the Tunneling Regime","authors":"S. Augst, C. L. Moore, J. Peatross, D. Meyerhofer","doi":"10.1364/swcr.1991.tua9","DOIUrl":"https://doi.org/10.1364/swcr.1991.tua9","url":null,"abstract":"Production of laser harmonics occurs when a high-intensity laser interacts with a non-linear medium. At sufficiently high intensities any medium will show non-linear effects. We have observed high-order odd harmonic generation using a l-µm, 1-ps laser pulse at intensities between 1013 and 1016 W/cm2, and we have measured the spatial profiles of the harmonics. The existence of high order odd harmonics has previously been demonstrated1 in noble gases using intensities between 1013 and 1014 W/cm2.","PeriodicalId":286766,"journal":{"name":"Short-Wavelength Coherent Radiation: Generation and Application","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115222848","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
High Performance Multilayer X-Ray Optics 高性能多层x射线光学
Short-Wavelength Coherent Radiation: Generation and Application Pub Date : 1992-05-22 DOI: 10.1364/swcr.1991.wc2
D. Stearns, R. S. Rosen, S. Vernon
{"title":"High Performance Multilayer X-Ray Optics","authors":"D. Stearns, R. S. Rosen, S. Vernon","doi":"10.1364/swcr.1991.wc2","DOIUrl":"https://doi.org/10.1364/swcr.1991.wc2","url":null,"abstract":"Multilayer x-ray optics are becoming increasingly important in diverse applications such as x-ray projection lithography1, x-ray laser cavities2, x-ray microscopy3, astronomy4 and spectroscopy5. In this paper we focus on the current development of normal incidence reflective optics for the soft x-ray spectrum of ~45 - 130 Å. The ultimate goal is to develop a soft x-ray imaging system capable of high throughput and diffraction-limited performance over an appropriate image field.","PeriodicalId":286766,"journal":{"name":"Short-Wavelength Coherent Radiation: Generation and Application","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128487715","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: 4
Generation of Ultrafast VUV Radiation by Reflection from a Relativistic Ionization Front 相对论性电离锋反射产生超快紫外辐射
Short-Wavelength Coherent Radiation: Generation and Application Pub Date : 1992-05-22 DOI: 10.1364/swcr.1991.tuc2
H. Kapteyn, M. Murnane
{"title":"Generation of Ultrafast VUV Radiation by Reflection from a Relativistic Ionization Front","authors":"H. Kapteyn, M. Murnane","doi":"10.1364/swcr.1991.tuc2","DOIUrl":"https://doi.org/10.1364/swcr.1991.tuc2","url":null,"abstract":"Herein we propose a method of producing short-wavelength radiation, which has the potential to produce optical pulses shorter than any that have been generated to date. This method is based on the process of upshifting light by reflecting it off a moving ionization front. This process has been considered in detail as a method for upshifting microwave radiation1. We show that by using an intense femtosecond light pulse to generate an ionization front through multiphoton ionization (MPI), it is possible to upshift a single-cycle far-infrared light pulse into the ultraviolet or vacuum ultraviolet. Since the ionization front created by MPI can be very sharp, the reflection process may add little dispersion to the pulse, making it possible to generate nearly single-cycle light pulses in the VUV. In this paper, we demonstrate that the process is experimentally realizable using the current generation of high energy femtosecond (0.1 Joule in 100 fsec) lasers. We discuss several physics issues unique to the generation of short-wavelength light using this technique. More detailed calculations of multiphoton ionization rates are necessary to determine the reflected pulse energy achievable using this technique, as will be discussed.","PeriodicalId":286766,"journal":{"name":"Short-Wavelength Coherent Radiation: Generation and Application","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130628855","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
Recent Progress in Soft X-Ray Laser Research at the Institute of Laser Engineering 激光工程研究所软x射线激光研究进展
Short-Wavelength Coherent Radiation: Generation and Application Pub Date : 1992-05-22 DOI: 10.1364/swcr.1991.tud4
H. Daido, Y. Kato, H. Azuma, K. Murai, H. Shiraga
{"title":"Recent Progress in Soft X-Ray Laser Research at the Institute of Laser Engineering","authors":"H. Daido, Y. Kato, H. Azuma, K. Murai, H. Shiraga","doi":"10.1364/swcr.1991.tud4","DOIUrl":"https://doi.org/10.1364/swcr.1991.tud4","url":null,"abstract":"In this paper, we present recent progress in soft x-ray laser research at the Institute of Laser Engineering. Detailed characterization of the explosive mode Balmer-alpha soft x-ray laser has been made. Extension of the Balmer-alpha laser to a larger gain length product and to shorter wavelengths are being tested.","PeriodicalId":286766,"journal":{"name":"Short-Wavelength Coherent Radiation: Generation and Application","volume":"220 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114215281","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
X-Ray Spectral Determination of Electron Density in Dense Laser-Excited Targets* 致密激光激发目标中电子密度的x射线光谱测定*
Short-Wavelength Coherent Radiation: Generation and Application Pub Date : 1992-05-22 DOI: 10.1364/swcr.1991.tua1
T. S. Luk, A. Mcpherson, D. Tate, K. Boyer, C. Rhodes
{"title":"X-Ray Spectral Determination of Electron Density in Dense Laser-Excited Targets*","authors":"T. S. Luk, A. Mcpherson, D. Tate, K. Boyer, C. Rhodes","doi":"10.1364/swcr.1991.tua1","DOIUrl":"https://doi.org/10.1364/swcr.1991.tua1","url":null,"abstract":"Plasmas produced by subpicosecond laser excitation of solid targets can produce bright short x-ray pulses[1] for x-ray laser pumping[2]. This type of plasma is unusual because it is hot (electron temperature in keV range), dense (near solid density) and highly non-equilibrium. It is particularly advantageous to use subpicosecond excitation to investigate this type of plasma, since expansion of the plasma can be quite small under this condition. Furthermore, it has been found that the prepulse associated with typical high-power ultraviolet laser systems does not Interfere with the subpicosecond excitation for ultraviolet transmitting solids, such as MgF2 and SiO2. This follows, since the intensity for appreciable absorption is roughly five orders of magnitude higher than the intensity associated with the laser prepulse. Also for laser radiation with wavelength of 248 nm, the critical density is 1.8 × 1022 cm−2, only a factor of 44 lower than the electron density of a completely stripped MgF2 solid target. Therefore, the laser radiation naturally interacts with a plasma of very high density. Finally, x-ray spectroscopy is particularly useful for diagnosing the conditions of the plasma for very short time intervals that are considerably outside of the range available for conventional streak-camera measurements. Since typical radiative lifetimes for kilovolt transitions are of the order of 100 fs, the emitted radiation can provide valuable information in the early hlgh-density phase of the plasma. In this experiment, we examine the dielectronic satellite from lithium-like ions in order to determine the electron density of the plasma.","PeriodicalId":286766,"journal":{"name":"Short-Wavelength Coherent Radiation: Generation and Application","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121827775","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
Towards Extreme VUV by Harmonic Generation in Strong Fields 利用强场谐波产生实现极端VUV
Short-Wavelength Coherent Radiation: Generation and Application Pub Date : 1992-05-22 DOI: 10.1364/swcr.1991.mc2
L. Lompre, A. Huillier, G. Mainfray
{"title":"Towards Extreme VUV by Harmonic Generation in Strong Fields","authors":"L. Lompre, A. Huillier, G. Mainfray","doi":"10.1364/swcr.1991.mc2","DOIUrl":"https://doi.org/10.1364/swcr.1991.mc2","url":null,"abstract":"Most of experiments on harmonic generation in a gaseous medium use short incident wavelengths in order to obtain the shortest generated wavelengths1−4. McPherson et al have reported up to the 17th harmonic in Ne using a 248 nm (KrF) excimer laser4 at an intensity of 1016 W/cm2. This radiation corresponds to the emission of a photon around 15 nm, or a photon energy of 85 eV. It has been demonstrated5,6 that high-order harmonics can be produced in a rare gas medium with laser photon energies more than 10 times smaller than the ionization energy.","PeriodicalId":286766,"journal":{"name":"Short-Wavelength Coherent Radiation: Generation and Application","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114269376","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
Reversible Multiphoton Ionization of Gases Observed by a Femtosecond Pump/Probe Schlieren Imaging Technique 用飞秒泵/探针纹影成像技术观察气体的可逆多光子电离
Short-Wavelength Coherent Radiation: Generation and Application Pub Date : 1992-05-22 DOI: 10.1364/swcr.1991.md2
J. Geindre, P. Audebert, J. Gauthier, R. Benattar, A. Mysyrowicz
{"title":"Reversible Multiphoton Ionization of Gases Observed by a Femtosecond Pump/Probe Schlieren Imaging Technique","authors":"J. Geindre, P. Audebert, J. Gauthier, R. Benattar, A. Mysyrowicz","doi":"10.1364/swcr.1991.md2","DOIUrl":"https://doi.org/10.1364/swcr.1991.md2","url":null,"abstract":"Using femtosecond time-resolved Schlieren imaging, we observe a light-induced reversible plasma-like change of the refractive index of a gas during optical irradiation by 80 fs pulses.","PeriodicalId":286766,"journal":{"name":"Short-Wavelength Coherent Radiation: Generation and Application","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128457818","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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