| Far-infrared vibrational spectra of all-trans, 9-cis and 13-cis retinal measured by THz time-domain spectroscopy M Walther, B Fischer, M Schall, H Helm, PU Jepsen Chemical Physics Letters 332 (3-4), 389-395, 2000 | 469 | 2000 |
| Collective vibrational modes in biological molecules investigated by terahertz time‐domain spectroscopy M Walther, P Plochocka, B Fischer, H Helm, P Uhd Jepsen Biopolymers: Original Research on Biomolecules 67 (4‐5), 310-313, 2002 | 459 | 2002 |
| Metal-insulator phase transition in a thin film observed with terahertz spectroscopy PU Jepsen, BM Fischer, A Thoman, H Helm, JY Suh, R Lopez, ... Physical Review B—Condensed Matter and Materials Physics 74 (20), 205103, 2006 | 444 | 2006 |
| Chemical recognition in terahertz time-domain spectroscopy and imaging B Fischer, M Hoffmann, H Helm, G Modjesch, PU Jepsen Semiconductor Science and Technology 20 (7), S246, 2005 | 373 | 2005 |
| Electro-optic detection of THz radiation in , and ZnTe C Winnewisser, PU Jepsen, M Schall, V Schyja, H Helm Applied Physics Letters 70 (23), 3069-3071, 1997 | 312 | 1997 |
| Photoelectron imaging spectrometry: Principle and inversion method C Bordas, F Paulig, H Helm, DL Huestis Review of scientific instruments 67 (6), 2257-2268, 1996 | 307 | 1996 |
| Mass spectrometric determination of partial electron impact ionization cross sections of He, Ne, Ar and Kr from threshold up to 180 eV K Stephan, H Helm, TD Märk The Journal of Chemical Physics 73 (8), 3763-3778, 1980 | 273 | 1980 |
| Terahertz time-domain spectroscopy and imaging of artificial RNA BM Fischer, M Hoffmann, H Helm, R Wilk, F Rutz, T Kleine-Ostmann, ... Optics Express 13 (14), 5205-5215, 2005 | 270 | 2005 |
| Far infrared properties of electro-optic crystals measured by THz time-domain spectroscopy M Schall, H Helm, SR Keiding International journal of infrared and millimeter waves 20, 595-604, 1999 | 260 | 1999 |
| Detection of THz pulses by phase retardation in lithium tantalate PU Jepsen, C Winnewisser, M Schall, V Schyja, SR Keiding, H Helm Physical Review E 53 (4), R3052, 1996 | 243 | 1996 |
| Chemical recognition with broadband THz spectroscopy BM Fischer, H Helm, PU Jepsen Proceedings of the IEEE 95 (8), 1592-1604, 2007 | 216 | 2007 |
| Chemical sensing and imaging with pulsed terahertz radiation M Walther, BM Fischer, A Ortner, A Bitzer, A Thoman, H Helm Analytical and bioanalytical chemistry 397, 1009-1017, 2010 | 209 | 2010 |
| Nanostructured gold films as broadband terahertz antireflection coatings A Thoman, A Kern, H Helm, M Walther Physical Review B—Condensed Matter and Materials Physics 77 (19), 195405, 2008 | 200 | 2008 |
| Transmission characteristics of dichroic filters measured by THz time-domain spectroscopy. C Winnewisser, F Lewen, H Helm Applied Physics A: Materials Science & Processing 66 (6), 1998 | 191 | 1998 |
| Images of photoelectrons formed in intense laser fields H Helm, N Bjerre, MJ Dyer, DL Huestis, M Saeed Physical review letters 70 (21), 3221, 1993 | 187 | 1993 |
| Buffer-gas effects on dark resonances: Theory and experiment M Erhard, H Helm Physical Review A 63 (4), 043813, 2001 | 185 | 2001 |
| Interactions and dynamics in ionic liquids A Stoppa, J Hunger, R Buchner, G Hefter, A Thoman, H Helm The Journal of Physical Chemistry B 112 (16), 4854-4858, 2008 | 183 | 2008 |
| Dynamics of strong-field above-threshold ionization of argon: Comparison between experiment and theory R Wiehle, B Witzel, H Helm, E Cormier Physical Review A 67 (6), 063405, 2003 | 145 | 2003 |
| Terahertz near-field imaging of electric and magnetic resonances of a planar metamaterial A Bitzer, H Merbold, A Thoman, T Feurer, H Helm, M Walther Optics Express 17 (5), 3826-3834, 2009 | 134 | 2009 |
| Terahertz pulse propagation in the near field and the far field A Gürtler, C Winnewisser, H Helm, P Uhd Jepsen Journal of the Optical Society of America A 17 (1), 74-83, 2000 | 131 | 2000 |
Peter Uhd JepsenProfessor, Optical Terahertz Science and Technology, Technical University of DenmarkVerified email at dtu.dk