H
H.-J. Hartmann
Researcher at Bremen Institute for Applied Beam Technology
Publications - 2
Citations - 96
H.-J. Hartmann is an academic researcher from Bremen Institute for Applied Beam Technology. The author has contributed to research in topics: Femtosecond & Refraction. The author has an hindex of 2, co-authored 2 publications receiving 94 citations.
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Journal ArticleDOI
Generation of femtosecond Bessel beams with microaxicon arrays.
Ruediger Grunwald,Uwe Griebner,F. Tschirschwitz,Erik T. J. Nibbering,Thomas Elsaesser,Kebbel,H.-J. Hartmann,Werner Jüptner +7 more
TL;DR: Evidence is presented that strong space-time coupling results in a time-dependent interference zone and significant changes of contrast, envelope function, and spatial frequency spectrum in comparison with continuous wave data.
Journal ArticleDOI
Spatially resolved small-angle noncollinear interferometric autocorrelation of ultrashort pulses with microaxicon arrays.
Rüdiger Grunwald,Uwe Griebner,Erik T. J. Nibbering,A. Kummrow,Matteo Rini,Thomas Elsaesser,Volker Kebbel,H.-J. Hartmann,Werner Jüptner +8 more
TL;DR: Small-angle, noncollinear, first- and second-order interferometric autocorrelation experiments with Ti:sapphire laser pulses of 9-80-fs duration have been performed with microaxicon arrays, indicating contributions to autocOrrelation by nonlinear refraction and travel-time differences.