H. Helm

Physics and Astronomy · Physical Sciences

47h-index8.0kcitations269works0.02yr avg
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Research Topics

Advanced Chemical Physics Studies(101), Atomic and Molecular Physics(88), Spectroscopy and Laser Applications(58), Mass Spectrometry Techniques and Applications(50), Laser-Matter Interactions and Applications(47)

Publications269 total

Metal-insulator phase transition in a V O2 thin film observed with terahertz spectroscopy
UNC Libraries·2023· 13 citedOpen Access
Tomography of photoelectron distributions produced through strong-field photodetachment of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow><mml:mi>Ag</mml:mi></mml:mrow><mml:mo>−</mml:mo></mml:msup></mml:math>
Physical review. A/Physical review, A·2020· 9 citedOpen Access
Tracing the Gouy phase shift of focused, radially polarized THz pulses
2016
Gouy phase shift of a tightly focused, radially polarized beam
Optica·2016· 43 citedOpen Access
Radio-frequency-assisted electromagnetically induced transparency
Physical Review A·2015· 13 cited
Imaging the spatial many-body wave functions of H$_3$
Bulletin of the American Physical Society·2014
Berry phase and its sign in quantum superposition states of thermal<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow/><mml:mn>87</mml:mn></mml:msup><mml:mi>Rb</mml:mi></mml:math>atoms
Physical Review A·2014· 8 cited
Imaging of spatial many-body wave functions via linear momentum measurements
Physical Chemistry Chemical Physics·2013· 13 cited
Profound Isotope Effect in Dissociation of Triatomic Hydrogen
The Journal of Physical Chemistry A·2013
Phase control and diagnostic of quantum mechanical superposition states
Physical Review A·2013· 5 cited
Quantitative analysis of the transient response of the refractive index to conditions of electromagnetically induced transparency
Physical Review A·2012· 15 cited
Modeling and control of entanglement dynamics in laser cooling of trapped atoms
Physical Review A·2012· 4 citedOpen Access
Strong-field ionization of H<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow/><mml:mn>2</mml:mn></mml:msub></mml:math>from ultraviolet to near-infrared wavelengths: Photoelectron energy and angular identifications
Physical Review A·2011· 10 cited
Nonponderomotive effects in multiphoton ionization of molecular hydrogen
Physical Review A·2011· 1 cited
Momentum vector correlations in three-particle fragmentation of triatomic hydrogen
Physical Review A·2011· 4 cited
Entanglement Dynamics of a Strongly Driven Trapped Atom
Physical Review Letters·2011· 20 citedOpen Access
Momentum vector correlation maps for three-particle fragmentation of neutral triatomic hydrogen near its ionization threshold
Physical Review A·2010· 7 cited
Entanglement between internal and external degrees of freedom of a driven trapped atom
Physica Scripta·2010· 4 cited
Chemical sensing and imaging with pulsed terahertz radiation
Analytical and Bioanalytical Chemistry·2010· 152 cited
Dissipative light scattering by a trapped atom approaching electromagnetically-induced-transparency conditions
Physical Review A·2010· 12 cited
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Frequent Co-authors

Peter Uhd Jepsen(9), M. Walther(7), P. C. Cosby(7), Bernd Fischer(6), C. Winnewisser(6), Andreas Thoman(5), M. Schall(5), K. Stephan(4), D. L. Huestis(3), V. Schyja(3), Andreas Bitzer(3), Frank Lewen(3), Igor Yu. Kiyan(3), Matthias C. Hoffmann(2), T. D. Märk(2), C. Bordas(2), S. R. Keiding(2), Richard Buchner(2), Hannes Merbold(2), R. Reichle(2)