Search Results - "van Leeuwen, K A H"

Feasibility of a pulsed ponderomotive phase plate for electron beams by van Leeuwen, K A H, Schaap, W J, Buijsse, B, Borrelli, S, Kempers, S T, Verhoeven, W, Luiten, O J

“…Abstract We propose a scheme for constructing a phase plate for use in an ultrafast Zernike-type phase contrast electron microscope, based on the interaction…”
Get full text

Coherent electron phase-space manipulation by combined elastic and inelastic light-electron scattering by Kempers, S T, van Elk, I J M, van Leeuwen, K A H, Luiten, O J

“…Abstract Photon-Induced Near-field Electron Microscopy (PINEM), Kapitza–Dirac (KD) gratings, and ponderomotive phase plates are examples of techniques in which…”
Get full text

Atom lithography without laser cooling by Smeets, B., van der Straten, P., Meijer, T., Fabrie, C. G. C. H. M., van Leeuwen, K. A. H.

“…Using direct-write atom lithography, Fe nanolines are deposited with a pitch of 186 nm, a full width at half maximum (FWHM) of 50 nm, and a height of up to…”
Get full text

Observation of nonspreading wave packets in an imaginary potential by Stützle, R, Göbel, M C, Hörner, Th, Kierig, E, Mourachko, I, Oberthaler, M K, Efremov, M A, Fedorov, M V, Yakovlev, V P, van Leeuwen, K A H, Schleich, W P

“…We propose and experimentally demonstrate a method to prepare a nonspreading atomic wave packet. Our technique relies on a spatially modulated absorption…”
Get full text

Direct Observation of Sub-Poissonian Temporal Statistics in a Continuous Free-Electron Beam with Subpicosecond Resolution by Borrelli, S, de Raadt, T C H, van der Geer, S B, Mutsaers, P H A, van Leeuwen, K A H, Luiten, O J

“…We present a novel method to measure the arrival time statistics of continuous electron beams with subpicosecond resolution, based on the combination of an rf…”
Get full text

Initial wavefunction dependence on atom interferometry phases by Jansen, M. A. H. M., van Leeuwen, K. A. H.

“…In this paper we present a mathematical procedure to analytically calculate the output signal of a pulsed atom interferometer in an inertial field. Using the…”
Get full text

Laser collimation of an Fe atomic beam on a leaky transition by SMEETS, B, HERFST, R. W, MAGUIRE, L. P, TE SLIGTE, E, VAN DER STRATEN, P, BEIJERINCK, H. C. W, VAN LEEUWEN, K. A. H

“…We report results of the first laser collimation of a thermal beam of Fe atoms on the leaky D4{/content/Q83827G0335V352J/xxlarge8594.gif} F5 transition, with…”
Get full text

Microwave ionization of hydrogen atoms: experiment versus classical dynamics by VAN LEEUWEN, K. A. H, OPPEN, G. V, RENWICK, S, BOWLIN, J. B, KOCH, P. M, JENSEN, R. V, RATH, O, RICHARDS, D, LEOPOLD, J. G

“…Ionization of hydrogen atoms with principal quantum number n = 32, 40, and 51-74 by a 9.92-GHz electric field was studied with a superimposed static electric…”
Get full text

Magnetic nanodots from atomic Fe: Can it be done? by te Sligte, E, Bosch, R C M, Smeets, B, van der Straten, P, Beijerinck, H C W, van Leeuwen, K A H

“…Laser focusing of Fe atoms offers the possibility of creating separate magnetic structures on a scale of 10 nm with exact periodicity. This can be done by…”
Get full text

Characterisation of the growth of a carbonaceous film on silicon by Beardmore, J.P., Palmer, A.J., Fabrie, C.G.C.H.M., van Leeuwen, K.A.H., Sang, R.T.

“…In this paper we present the first characterisation of growth of a carbonaceous film on a silicon substrate exposed to a metastable atom beam using an in situ…”
Get full text

Structure formation in atom lithography using geometric collimation by Meijer, T., Beardmore, J. P., Fabrie, C. G. C. H. M., van Lieshout, J. P., Notermans, R. P. M. J. W., Sang, R. T., Vredenbregt, E. J. D., van Leeuwen, K. A. H.

“…Atom lithography uses standing wave light fields as arrays of lenses to focus neutral atom beams into line patterns on a substrate. Laser cooled atom beams are…”
Get full text

Bright thermal atomic beams by laser cooling: A 1400-fold gain in beam flux by Hoogerland, M. D., Driessen, J. P. J., Vredenbregt, E. J. D., Megens, H. J. L., Schuwer, M. P., Beijerinck, H. C. W., van Leeuwen, K. A. H.

“…Using a three-step transverse laser cooling scheme, a strongly diverging flow of metastable Ne(3s super(3)P sub(2)) atoms is compressed into a well-collimated,…”
Get full text

Atom lithography of Fe by te Sligte, E., Smeets, B., van der Stam, K. M. R., Herfst, R. W., van der Straten, P., Beijerinck, H. C. W., van Leeuwen, K. A. H.

“…Direct write atom lithography is a technique in which nearly resonant light is used to pattern an atom beam. Nanostructures are formed when the patterned beam…”
Get full text

Feasibility of a Pulsed Ponderomotive Phase Plate for Electron Beams by van Leeuwen, K. A. H, Schaap, W. J, Buijsse, B, Borelli, S, Kempers, S. T, Verhoeven, W, Luiten, O. J

“…We propose a scheme for constructing a phase plate for use in an ultrafast Zernike-type phase contrast electron microscope, based on the interaction of the…”
Get full text

Atom lithography with two-dimensional optical masks by PETRA, S. J. H, VAN LEEUWEN, K. A. H, FEENSTRA, L, HOGERVORST, W, VASSEN, W

“…With a two-dimensional (2D) optical mask at {/content/R7E88LKTDRAA5HLM/xxlarge955.gif}=1083 nm, nanoscale patterns are created for the first time in an atom…”
Get full text

Laser frequency stabilization using an Fe-Ar hollow cathode discharge cell by SMEETS, B, BOSCH, R. C. M, VAN DER STRATEN, P, TE SLIGTE, E, SCHOLTEN, R. E, BEIJERINCK, H. C. W, VAN LEEUWEN, K. A. H

“…Polarization spectroscopy of an Fe-Ar hollow cathode discharge cell was used to lock a frequency-doubled Ti:sapphire laser to the 372-nmD4RTF5 transition of…”
Get full text

Two-frequency microwave quenching of highly excited hydrogen atoms by MOORMAN, L, GALVEZ, E. J, SAUER, B. E, MORTAZAWI-M, A, VAN LEEUWEN, K. A. H, OPPEN, G. V, KOCH, P. M

“…Experimental results are presented on the quenching (ionization) of H (n0) = 43-49) atoms by a linearly polarized microwave electric field consisting of two…”
Get full text

Numerical simulations on the motion of atoms travelling through a standing-wave light field by PETRA, S. J. H, VAN LEEUWEN, K. A. H, FEENSTRA, L, HOGERVORST, W, VASSEN, W

Get full text

Laser cooling and trapping visualized by Vredenbregt, E. J. D., van Leeuwen, K. A. H.

“…Laser cooling and trapping have become widely used in the atomic physics laboratory. A computer program is presented that simulates some of the most important…”
Get full text

Intermode traces – fundamental interference phenomenon in quantum and wave physics by Kaplan, A E, Stifter, P, Leeuwen, K A H van, Lamb, W E, Schleich, W P

Get full text