• Aucun résultat trouvé

Haut PDF Development of a coherent ultrafast transmission electron microscope based on a laser-driven cold field emission source

Development of a coherent ultrafast transmission electron microscope based on a laser-driven cold field emission source

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 ...

206

Development of a coherent ultrafast transmission electron microscope based on a laser-driven cold field emission source

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 ...

207

High brightness ultrafast transmission electron microscope based on a laser-driven cold-field emission source: principle and applications

High brightness ultrafast transmission electron microscope based on a laser-driven cold-field emission source: principle and applications

... 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 ...

29

Development of an ultrafast electron source based on a cold-field emission gun for ultrafast coherent TEM

Development of an ultrafast electron source based on a cold-field emission gun for ultrafast coherent TEM

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

7

Excitation of nitrogen molecular ions in a strong laser field by electron recollisions

Excitation of nitrogen molecular ions in a strong laser field by electron recollisions

... 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 ...

11

Electron Beam Brightness and Undulator Radiation Brilliance for a Laser Plasma Acceleration Based Free Electron Laser

Electron Beam Brightness and Undulator Radiation Brilliance for a Laser Plasma Acceleration Based Free Electron Laser

... 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 ...

18

Coherent flash of light emitted by a cold atomic cloud

Coherent flash of light emitted by a cold atomic cloud

... 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 ...

5

Magnification-continuous static calibration model of a scanning-electron microscope.

Magnification-continuous static calibration model of a scanning-electron microscope.

... 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 ...

14

Threshold of a random laser based on Raman gain in cold atoms

Threshold of a random laser based on Raman gain in cold atoms

... 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 ...

11

Strong field multiphoton inversion of a three-level system using shaped ultrafast laser pulses

Strong field multiphoton inversion of a three-level system using shaped ultrafast laser pulses

... 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 ...

5

A cold-atom random laser

A cold-atom random laser

... 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 ...

8

Transmission Electron Microscope imaging sharpens geochronological interpretation of zircon and monazite

Transmission Electron Microscope imaging sharpens geochronological interpretation of zircon and monazite

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

37

Compton and Raman free electron laser stability properties for a cold electron beam propagating through a helical magnetic wiggler

Compton and Raman free electron laser stability properties for a cold electron beam propagating through a helical magnetic wiggler

... 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] ...

78

Progress Towards Laser Plasma Electron Based Free Electron Laser on COXINEL

Progress Towards Laser Plasma Electron Based Free Electron Laser on COXINEL

... 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 ...

5

Threshold of a Random Laser with Cold Atoms

Threshold of a Random Laser with Cold Atoms

... 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 ...

5

Crystallographic analysis of the solid-state dewetting of polycrystalline gold film using automated indexing in a transmission electron microscope

Crystallographic analysis of the solid-state dewetting of polycrystalline gold film using automated indexing in a transmission electron microscope

... 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 ...

8

Coherent light transmission by a dew pattern

Coherent light transmission by a dew pattern

... 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 ...

7

Design and development of a 3D X-ray microscope

Design and development of a 3D X-ray microscope

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

134

Towards a random laser with cold atoms

Towards a random laser with cold atoms

... 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 ...

24

Coherent combination of ultrafast fiber amplifiers

Coherent combination of ultrafast fiber amplifiers

... 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 ...

16

Show all 10000 documents...