Format

Send to

Choose Destination

Links from PubMed

See comment in PubMed Commons below
Opt Express. 2009 Feb 2;17(3):1571-6.

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

Author information

  • 1Institute of Ion Beam Physics and Materials Research, Forschungszentrum Dresden Rossendorf, Dresden, Germany. s.winnerl@fzd.de

Abstract

We report on emission and detection of pulsed terahertz radiation of radial and azimuthal polarization by microstructured photoconductive antennas. To this end the electrode geometry of the emitter is inverse to the desired THz field pattern and a second periodic structure prevents destructive interference effects. Beam profiles of freely propagating THz waves are studied for divergent and refocused beams. They can be well described as the lowest order Bessel-Gauss modes with a divergence comparable to linearly polarized Gaussian beams. Additionally, mode sensitive detection is demonstrated for radially polarized radiation.

PMID:
19188986
[PubMed]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Optical Society of America
    Loading ...
    Write to the Help Desk