Terahertz vector beams

Author

Winnerl, S. ; Zimmermann, B. ; Peter, F. ; Schneider, H. ; Helm, M.

Author_Institution

Forschungszentrum Dresden-Rossendorf, Dresden

fYear

2008

fDate

15-19 Sept. 2008

Firstpage

1

Lastpage

2

Abstract

We present a concept for the design of photoconductive antennas which allows the generation and detection of terahertz radiation pulses of freely selectable modes. We demonstrate the principle by showing electric field distributions for vector beams, namely the lowest order Gaussian-Bessel beams. They have a donut-like intensity distribution and either radial or azimuthal polarization. For comparison, Gaussian beams are investigated.

Keywords

photoconducting devices; submillimetre wave antennas; submillimetre wave generation; Gaussian-Bessel beams; azimuthal polarization; donut-like intensity distribution; electric field distributions; photoconductive antenna design; radial polarization; terahertz radiation pulse detection; terahertz radiation pulse generation; terahertz vector beams; Electrodes; Electromagnetic propagation; Electromagnetic wave polarization; Gallium arsenide; Geometrical optics; Laser beams; Laser excitation; Metallization; Photoconductivity; Radiation detectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter and Terahertz Waves, 2008. IRMMW-THz 2008. 33rd International Conference on

Conference_Location

Pasadena, CA

Print_ISBN

978-1-4244-2119-0

Electronic_ISBN

978-1-4244-2120-6

Type

conf

DOI

10.1109/ICIMW.2008.4665823

Filename

4665823