scispace - formally typeset
G

Georg von Freymann

Researcher at Kaiserslautern University of Technology

Publications -  237
Citations -  9095

Georg von Freymann is an academic researcher from Kaiserslautern University of Technology. The author has contributed to research in topics: Terahertz radiation & Photonic crystal. The author has an hindex of 33, co-authored 198 publications receiving 7889 citations. Previous affiliations of Georg von Freymann include University of Toronto & Fraunhofer Society.

Papers
More filters
Journal ArticleDOI

Measurement of group velocity dispersion for finite size three-dimensional photonic crystals in the near-infrared spectral region

Georg von Freymann, +4 more
- 25 Jan 2005 - 
TL;DR: In this paper, the authors measured group delay and group velocity dispersion of colloidal photonic crystals in the near-infrared with white light interferometry and found that scattering on sample imperfections is the main reason for group delays lower than theoretically expected.
Journal ArticleDOI

Generation and detection of terahertz radiation up to 4.5 THz by low-temperature grown GaAs photoconductive antennas excited at 1560 nm

Jan-Martin Rämer, +3 more
- 12 Jul 2013 - 
TL;DR: In this paper, the dependence of the DC photo current and terahertz peak amplitude on the illumination power is measured and found to follow a superlinear power law proposed for sequential charge carrier excitation via midgap states.
Journal ArticleDOI

Dynamic defects in photonic Floquet topological insulators

Christina Jörg, +4 more
- 07 Aug 2017 - 
TL;DR: In this paper, the influence of defects with time-dependent coupling on the robustness of the transport along the edge in a Floquet system of helically curved waveguides was investigated.
Journal ArticleDOI

Nanocrystals as precursors for flexible functional films.

Ludovico Cademartiri, +7 more
- 01 Dec 2005 - 
TL;DR: A general strategy to obtain tailorable and patternable functional flexible films of densely packed nanocry crystals of different kinds by using the as-prepared nanocrystals as precursors in a low-power, room-temperature, O2 plasma treatment is presented.
Journal ArticleDOI

Multi foci with diffraction limited resolution.

Erik H. Waller, +1 more
- 09 Sep 2013 - 
TL;DR: A spatial-light-modulator-based method that allows for highly uniform, close to Gaussian spots with diffraction limited resolution using a wavelength of 780 nm and the lateral and axial resolution limits of spots generated by the new algorithm are found to be close to the diffraction limit.