[PDF] Top 20 Development of a coherent ultrafast transmission electron microscope based on a laser-driven cold field emission source

... by a CCD ...resolution. A new approach is therefore necessary to study ultrafast ...the development of in situ electron microscopy, Oleg Bostan- joglo laid the foundations for ... Voir le document complet

... by a CCD ...resolution. A new approach is therefore necessary to study ultrafast ...the development of in situ electron microscopy, Oleg Bostan- joglo laid the foundations for ... Voir le document complet

... resolution electron spectroscopy and cathodoluminescence Until now, most Photon Induced Near-field Electron Microscopy (PINEM) experiments performed to map the optical near-field of nano-objects have ... Voir le document complet

... Berlin, ultrafast Transmission Electron Microscopy (UTEM) has experienced a spectacular boost at the beginning of the cen- tury when ...Institute of Technology demonstrated ... Voir le document complet

... 1–10% of the nitrogen gas molecules could be ionized with the laser ...Modeling of the quantum divergence of electron cloud moving in the laser field with multiple ... Voir le document complet

... examined. A magnetic chicane can be introduced in the line to stretch the electron beam and reduce the slice energy spread while inducing an energy-position ...correlation. A combined scaling law ... Voir le document complet

... radius of the cloud). The coherent flash is thus expected to de- cay faster at the cloud center – the larger the optical thickness, the shorter the decay time – than in the ex- ternal ...producing a ... Voir le document complet

... present a new calibration model of both static distortion and projection for a scanning-electron microscope ...for a discrete set of low and high magnifications: at low ... Voir le document complet

... hypothesis of homogeneous atomic density and monochromatic and homogeneous pumping could also be discussed [43], especially when high optical thicknesses are involved, as the pump attenuation may become ... Voir le document complet

... inversion of a three-level atomic system using a single shaped ultrafast laser ...order of magnitude gain over the population transfer for a unshaped laser ...scans ... Voir le document complet

... evidence of combined gain and scattering of light in a cloud of cold atoms, demonstrating random lasing in a dilute ...type of experiments, based on well-controlled ... Voir le document complet

... is a multi-disciplinary open access archive for the deposit and dissemination of sci- entific research documents, whether they are pub- lished or ... Voir le document complet

... From Figs. VI, the CDR growth rate curve provides an adequate approximation to that of the FDR only over the interval of k extending from the downshifted peak to somewhat b[r] ... Voir le document complet

... Accelerator based light sources presently know a very wide development [8], with the FEL [9] advent in the X- ray domain [10] coming along with an increase of the peak brightness by several ... Voir le document complet

... order of 300, which is within reach of state-of-the-art cold-atom ...in a regime of relatively low ...in a gain medium is strong enough so that gain in the sample volume ... Voir le document complet

... ffects of crystal orientation on the dewetting process of polycrystalline Au films, as determined using an automated crystallographic orientation and index- ing tool incorporated into a ...above ... Voir le document complet

... wettability of the surface on which vapor condenses, dew forms a transparent film or a diffuse assembly of ...knowledge of the properties of dew, “breath figures” or, generally ... Voir le document complet

... Figure 2.7: Hounsfield working on the first laboratory CT scanner. While studying pattern recognition techniques, Geofrey N. Housfield discovered, independently of Cormack,[r] ... Voir le document complet

... Random laser threshold Although different kinds of random lasers have been achieved experimentally, several points are still under ...regime of incoherent (or intensity) transport, feedback is ... Voir le document complet

... degrees of freedom to adjust the amplitude of each replica, since the same subsystem is used to split and combine, and the number of replicas increases exponentially with the number of delay ... Voir le document complet