Coherent terahertz radiation source and user area at FACET

Author

Wu, Ziran ; Fisher, Alan ; Loos, Henrik ; Hogan, Mark

Author_Institution

Adv. Accel. Res. Dept., Stanford Linear Accel. Nat. Lab., Menlo Park, CA, USA

fYear

2012

fDate

8-14 July 2012

Firstpage

1

Lastpage

2

Abstract

The Facility for Accelerator science and Experimental Tests (FACET) at SLAC provides a high charge, high peak current, sub-picosecond bunched electron beam that is ideal for 0.1 to 2 THz radiation generation via coherent transition radiation. This paper presents preliminary characterization of the terahertz pulses generated by the FACET electron beam. The measured THz frequency content spans from 0.25 THz to 2.3 THz and peaks at around 0.5 THz. The radiation has been focused down to a 4.4 × 4.8 mm² transverse spot with 0.69 mJ collected total energy per pulse. Fitting the energy to the spatiotemporal profile of the THz pulse yields peak e-field amplitude of 1.5 MV/cm.

Keywords

electron beams; terahertz waves; FACET electron beam; coherent transition radiation; e-field amplitude; frequency 0.25 THz to 2.3 THz; peak current; spatiotemporal profile; subpicosecond bunched electron beam; terahertz pulses; terahertz radiation source; Electron beams; Energy measurement; Optical interferometry; Optical pulses; Photonics; Power measurement; Structural beams;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE

Conference_Location

Chicago, IL

ISSN

1522-3965

Print_ISBN

978-1-4673-0461-0

Type

conf

DOI

10.1109/APS.2012.6348818

Filename

6348818