# FS-FLASH-B

 2017-06-2310:06 [PUBDB-2017-05924] Journal Article et al Statistical properties of a free-electron laser revealed by Hanbury Brown?Twiss interferometry Physical review / A 95(2), 023843 (2017) [10.1103/PhysRevA.95.023843]   We present a comprehensive experimental analysis of statistical properties of the self-amplified spontaneous emission free-electron laser (FEL) FLASH by means of Hanbury Brown and Twiss interferometry. The experiments were performed at FEL wavelengths of 5.5, 13.4, and 20.8 nm [...] OpenAccess: PDF PDF (PDFA); 2017-05-1211:45 [PUBDB-2017-02744] Journal Article et al Attosecond Interferometry with Self-Amplified Spontaneous Emission of a free-electron laser Nature Communications 8, 15626 (2017) [10.1038/ncomms15626]   Light-phase-sensitive techniques, such as coherent multidimensional spectroscopy, are well-established in a broad spectral range, already spanning from radio-frequencies in nuclear magnetic resonance spectroscopy to visible and ultraviolet wavelengths in nonlinear optics with table-top lasers. In these cases, the ability to tailor the phases of electromagnetic waves with high precision is essential [...] OpenAccess: PDF PDF (PDFA); 2017-04-0310:09 [PUBDB-2017-01521] Journal Article et al Optimization and Characterization of High-Harmonic Generation for Probing Solid Density Plasmas Photonics 4(2), 25 (2017) [10.3390/photonics4020025]   The creation of high energy density plasma states produced during laser–solid interaction on a sub-picosecond timescale opens a way to create astrophysical plasmas in the lab to investigate their properties, such as the frequency-dependent refractive index. Available probes to measure absorption and phase-changes given by the complex refractive index of the plasma state are extreme-UV (EUV) and soft X-ray (XUV) ultra-short pulses from high harmonic generation (HHG). [...] OpenAccess: PDF; External link: Fulltext 2017-03-1418:36 [PUBDB-2017-01374] Internal Report et al Quantum Imaging with Incoherently Scattered Light from a Free-Electron Laser 17 pp. (2017) [10.3204/PUBDB-2017-01374]   The advent of accelerator-driven x-ray free-electron lasers (FEL) has opened new avenues for high-resolution structure determination via diffraction methods that go far beyond conventional x-ray crystallography methods. These techniques rely on coherent scattering processes that require the maintenance of first-order coherence of the radiation field throughout the imaging procedure. [...] OpenAccess: PDF; 2017-02-0205:37 [PUBDB-2017-00830] Journal Article et al Correlated electronic decay in expanding clusters triggered by intense XUV pulses from a Free-Electron-Laser Scientific reports 7, 40736 (2017) [10.1038/srep40736]   Irradiation of nanoscale clusters and large molecules with intense laser pulses transforms them into highly-excited non- equilibrium states. The dynamics of intense laser-cluster interaction is encoded in electron kinetic energy spectra, which contain signatures of direct photoelectron emission as well as emission of thermalized nanoplasma electrons. [...] OpenAccess: PDF; 2017-01-0912:38 [PUBDB-2017-00305] Journal Article Zangrando, M. PhotonDiag2015 workshop: introductory overview Journal of synchrotron radiation 23(1), 1 - 2 (2016) [10.1107/S1600577515022730]   Restricted: PDF; 2016-11-1710:54 [PUBDB-2016-05321] Conference Presentation (After Call) et al Terahertz Radiation Driven Dynamics of Magnetic DomainStructures Probed by Free-Electron Laser Light 61st Annual Conference on Magnetism and Magnetic Materials, MMM, Meeting locationNew Orleans, USA, 31 Oct 2016 - 4 Nov 2016 Controlling magnetism on ultra-fast time scales and on nanometer lengthscales is a challenge for modern research in magnetism. Means for inducingdynamics on these time scales are femtosecond optical lasers [1] and THzsources [2]. [...] 2016-08-2210:42 [PUBDB-2016-03283] Journal Article et al High-Field High-Repetition-Rate Sources for the Coherent THz Control of Matter Scientific reports 6, 22256 (2016) [10.1038/srep22256]   Ultrashort flashes of THz light with low photon energies of a few meV, but strong electric or magneticfield transients have recently been employed to prepare various fascinating nonequilibrium statesin matter. Here we present a new class of sources based on superradiant enhancement of radiationfrom relativistic electron bunches in a compact electron accelerator that we believe will revolutionizeexperiments in this field. [...] OpenAccess: PDF PDF (PDFA); 2012-09-1919:21 [PHPPUBDB-21731] Journal Article et al Spatial and temporal coherence properties of single free-electron laser pulses Optics express 20(16), 17480 - 17495 (2012) [10.1364/OE.20.017480]   The experimental characterization of the spatial and temporal coherence properties of the free-electron laser in Hamburg (FLASH) at a wavelength of 8.0 nm is presented. Double pinhole diffraction patterns of single femtosecond pulses focused to a size of about 10×10 μm$^2$ were measured. [...] OpenAccess: PDF; External link: Fulltext 2012-09-1919:06 [PHPPUBDB-15286] Journal Article et al Characterization of a two-color pump-probe setup at FLASH using a velocity map imaging spectrometer Optics letters 35, 4163-4165 (2010) [10.1364/OL.35.004163]   We report on the implementation of a high-count-rate charged particle imaging detector for two-color pump-probe experiments at the free electron laser in Hamburg (FLASH). In doing so, we have developed a procedure for finding the spatial and temporal overlap between the extreme UV free electron laser (FEL) pulses and the IR pulses, which allows for complete alignment of the setup in situations where the region of overlap between the FEL and the IR is not easily accessible by means of imaging optics.. OpenAccess: PDF; External links: OpenAccess; OpenAccess; OpenAccess; OpenAccess