نتایج جستجو برای: ray laser

تعداد نتایج: 478312  

Journal: :Optics letters 2012
Brendan A Reagan Keith A Wernsing Alden H Curtis Federico J Furch Bradley M Luther Dinesh Patel Carmen S Menoni Jorge J Rocca

We demonstrate the operation of a gain-saturated table-top soft x-ray laser at 100 Hz repetition rate. The laser generates an average power of 0.15 mW at λ=18.9  nm, the highest laser power reported to date from a sub-20-nm wavelength compact source. Picosecond laser pulses of 1.5 μJ energy were produced at λ=18.9  nm by amplification in a Mo plasma created by tailoring the temporal intensity p...

2015
H. C. Poon D. K. Saldin

An X-ray free electron laser is a new source of x-rays some 10 × 10(9) times brighter than any previous X-ray source, giving rise to the possibility of structure determination of individual biological particles without crystallization. Some of the earliest samples used in the X-ray free electron laser are viruses because they are about the largest of reproducible bioparticles. We show how commo...

Journal: :Optics letters 1996
J L Chilla J J Rocca O E Martinez M C Marconi

A soft-x-ray Mach-Zehnder interferometer configuration that makes use of the time delay introduced by diffraction gratings to conduct single-shot measurements of the linewidth of soft-x-ray laser amplifiers is proposed and analyzed. The scheme was experimentally demonstrated in the near-IR region of the spectrum by measurement of the mode separation of a semiconductor laser. A symmetric configu...

1993
P. B. Fernandez

Feasibility of using a high power C02 laser as an alternative source to test high heat load x-ray optics The proposed Undulator A at the Advanced Photon Source (APS) will deliver peak power densities of 150 watts/mm 2 , with total power up to 3800 watts, incident on the first crystal of a double crystal monochromator. The XFO-OP group has undertaken an extensive research program to find efficie...

اسکندری, فاطمه, رنجبر, مهدی, سلامتی, هادی, کاملی, پرویز,

 In this paper, ZnO thin film was prepared by sol-gel process on glass substrates. The deposited films were dried at 100 and 240 ˚C and then annealed at 300, 400 and 500 ˚C. The two-probe measurement showed that resistance of as-prepared films is very high. The KrF excimer (λ=248 nm) laser irradiation with 1000 pulses, frequency of 1 Hz and 90 mJ/cm2 energy on surface of film resulted in the re...

2002
Raymond F. Smith James Dunn Joseph Nilsen James R. Hunter Jorge Filevich Mario C. Marconi

We present a study detailing the effects of refraction on the analysis and interpretation of line-of-site optical probe characterization techniques within laser-produced plasmas. Results using x-ray laser backlit grid deflectometry and ray-tracing simulations illustrate the extent to which refraction can be a limiting factor in diagnosing high-density, short-scale-length plasmas. Analysis is ap...

2012
D Issenmann S Ibrahimkutty R Steininger J Göttlicher T Baumbach N Hiller A-S Müller A Plech

A high time resolution in the picosecond range is required for the time-domain investigation of phonon dynamics in crystalline systems. Following a recently developed scheme in the visible spectrum, this resolution can be achieved by a method called asynchronous optical x-ray sampling (ASOXS). A pulsed femtosecond laser with high repetition rate is synchronized to the electron bunches in a stor...

Journal: :Physical review letters 2008
F Dorchies F Blasco C Bonté T Caillaud C Fourment O Peyrusse

We present the first experimental evidence of the subpicosecond duration of x-ray pulses emitted from laser-irradiated clusters, demonstrating the suitability of such a debris free target for ultrafast x-ray science applications. The K-shell emission (approximately 3 keV) from large Ar clusters (6 x 10(5) to 4 x 10(6) atoms) is time resolved, when irradiated by ultrashort (40 fs to 5 ps) and in...

Journal: :Physical review letters 2005
A L Cavalieri D M Fritz S H Lee P H Bucksbaum D A Reis J Rudati D M Mills P H Fuoss G B Stephenson C C Kao D P Siddons D P Lowney A G Macphee D Weinstein R W Falcone R Pahl J Als-Nielsen C Blome S Düsterer R Ischebeck H Schlarb H Schulte-Schrepping Th Tschentscher J Schneider O Hignette F Sette K Sokolowski-Tinten H N Chapman R W Lee T N Hansen O Synnergren J Larsson S Techert J Sheppard J S Wark M Bergh C Caleman G Huldt D van der Spoel N Timneanu J Hajdu R A Akre E Bong P Emma P Krejcik J Arthur S Brennan K J Gaffney A M Lindenberg K Luening J B Hastings

Linear-accelerator-based sources will revolutionize ultrafast x-ray science due to their unprecedented brightness and short pulse duration. However, time-resolved studies at the resolution of the x-ray pulse duration are hampered by the inability to precisely synchronize an external laser to the accelerator. At the Sub-Picosecond Pulse Source at the Stanford Linear-Accelerator Center we solved ...

1999
S. Kashiwagi M. Washio I. Ben-Zvi I. Pogorelsky K. Kusche J. Skaritka V. Yakimenko X. J. Wang T. Hirose T. Muto K. Dobashi J. Urakawa T. Omori T. Okugi

We report the first results of high intensity x-ray generation using Inverse Laser Compton scattering. This experiment was carried out by a US-Japan collaboration at the Brookhaven National Laboratory (BNL) Accelerator Test Facility (ATF) in September 1999.The ATF is an accelerator and beam physics user facility. The 3.5 ps x-ray pulse at 6.5 keV, containing ~107 x-ray photons was generated by ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید