Helm M - Search Results

1

Impulsive terahertz radiation with high electric fields from an amplifier-driven large-area photoconductive antenna.

Beck M, Schäfer H, Klatt G, Demsar J, Winnerl S, Helm M, Dekorsy T. Beck M, et al. Among authors: helm m. Opt Express. 2010 Apr 26;18(9):9251-7. doi: 10.1364/OE.18.009251. Opt Express. 2010. PMID: 20588772 Free article.

2

Two crossovers in the Pseudogap regime of YBa 2Cu 3O (7-delta) superconductors observed by ultrafast spectroscopy.

Misochko OV, Georgiev N, Dekorsy T, Helm M. Misochko OV, et al. Among authors: helm m. Phys Rev Lett. 2002 Aug 5;89(6):067002. doi: 10.1103/PhysRevLett.89.067002. Epub 2002 Jul 22. Phys Rev Lett. 2002. PMID: 12190603

3

Infrared-phonon-polariton resonance of the nonlinear susceptibility in GaAs.

Dekorsy T, Yakovlev VA, Seidel W, Helm M, Keilmann F. Dekorsy T, et al. Among authors: helm m. Phys Rev Lett. 2003 Feb 7;90(5):055508. doi: 10.1103/PhysRevLett.90.055508. Epub 2003 Feb 7. Phys Rev Lett. 2003. PMID: 12633374

4

Optimum excitation conditions for the generation of high-electric-field terahertz radiation from an oscillator-driven photoconductive device.

Dreyhaupt A, Winnerl S, Helm M, Dekorsy T. Dreyhaupt A, et al. Among authors: helm m. Opt Lett. 2006 May 15;31(10):1546-8. doi: 10.1364/ol.31.001546. Opt Lett. 2006. PMID: 16642167

5

Spectroscopic THz near-field microscope.

von Ribbeck HG, Brehm M, van der Weide DW, Winnerl S, Drachenko O, Helm M, Keilmann F. von Ribbeck HG, et al. Among authors: helm m. Opt Express. 2008 Mar 3;16(5):3430-8. doi: 10.1364/oe.16.003430. Opt Express. 2008. PMID: 18542434 Free article.

6

Anisotropy contrast in phonon-enhanced apertureless near-field microscopy using a free-electron laser.

Kehr SC, Cebula M, Mieth O, Härtling T, Seidel J, Grafström S, Eng LM, Winnerl S, Stehr D, Helm M. Kehr SC, et al. Among authors: helm m. Phys Rev Lett. 2008 Jun 27;100(25):256403. doi: 10.1103/PhysRevLett.100.256403. Epub 2008 Jun 24. Phys Rev Lett. 2008. PMID: 18643683

7

Gold nanoparticle tips for optical field confinement in infrared scattering near-field optical microscopy.

Wenzel MT, Härtling T, Olk P, Kehr SC, Grafström S, Winnerl S, Helm M, Eng LM. Wenzel MT, et al. Among authors: helm m. Opt Express. 2008 Aug 4;16(16):12302-12. doi: 10.1364/oe.16.012302. Opt Express. 2008. PMID: 18679508 Free article.

8

Terahertz Bessel-Gauss beams of radial and azimuthal polarization from microstructured photoconductive antennas.

Winnerl S, Zimmermann B, Peter F, Schneider H, Helm M. Winnerl S, et al. Among authors: helm m. Opt Express. 2009 Feb 2;17(3):1571-6. doi: 10.1364/oe.17.001571. Opt Express. 2009. PMID: 19188986 Free article.

9

High-resolution THz spectrometer with kHz scan rates.

Bartels A, Thoma A, Janke C, Dekorsy T, Dreyhaupt A, Winnerl S, Helm M. Bartels A, et al. Among authors: helm m. Opt Express. 2006 Jan 9;14(1):430-7. doi: 10.1364/opex.14.000430. Opt Express. 2006. PMID: 19503357 Free article.

10

Terahertz two-photon quantum well infrared photodetector.

Schneider H, Liu HC, Winnerl S, Song CY, Walther M, Helm M. Schneider H, et al. Among authors: helm m. Opt Express. 2009 Jul 20;17(15):12279-84. doi: 10.1364/oe.17.012279. Opt Express. 2009. PMID: 19654629 Free article.

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