Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Hartmut Schroeder"'
Publikováno v:
Optics Communications. 266:302-306
We discover that self-steepening occurs so fast with slight change in the input energy that it could be considered as an on–off process whose potential application could be far reaching. This observation was carried out by generating a stable unifo
Autor:
Andreas Becker, S.A. Hosseini, Olga G. Kosareva, Weiwei Liu, Hartmut Schroeder, Francis Théberge, Neset Akozbek, See Leang Chin, V. P. Kandidov, Q. Luo
Publikováno v:
Canadian Journal of Physics. 83:863-905
When a powerful femtosecond laser pulse propagates in an optical medium, self-focusing occurs. Normally, it is the most powerful part (slice) of the pulse that self-focuses first during its propagation. Self-focusing is balanced by the creation of pl
Autor:
Hartmut Schroeder, See Leang Chin
Publikováno v:
Optics Communications. 234:399-406
The full propagation dynamics of a powerful ∼50 fs Ti-sapphire laser pulse is visualized for the first time in a dilute solution of Rhodamine B dissolved in methanol through two-photon fluorescence. These processes include self-focusing, group velo
Autor:
James Strohaber, Hartmut Schroeder, A. A. Kolomenskii, Gamze Kaya, Hans A. Schuessler, N. Kaya
Publikováno v:
Optics express. 20(12)
We studied white-light generation in water using spatially- structured beams of femtosecond radiation. By changing the transverse spatial phase of an initial Gaussian beam with a 1D spatial light modulator to that of an Hermite-Gaussian (HGn,m) mode,
Publikováno v:
Scopus-Elsevier
Analysis of heavy metals in soils, sand, and sewage sledge samples has been studied by means of time-resolved optical emission spectrometry from laser-induced plasma. The instrumental setup has been developed as a fast screening detector for future a
Publikováno v:
Analytical Chemistry. 65:1928-1931
Publikováno v:
The Journal of the Acoustical Society of America. 93:3105-3116
The Gaussian beam approach solves the wave equation in the neighborhood of the conventional rays using the parabolic approximation. The solution associates with each ray a beam having a Gaussian amplitude profile normal to the ray. The approximate ov
Publikováno v:
Analytical Chemistry. 64:2787-2796
A simple instrumental setup for quantitative chemical analysis, based on the measurement of the time-resolved voltage induced on electrodes by MPI-generated charges, is suggested and evaluated. The method is suitable for on-line measurements and may