Multichannel balanced electro-optic detection for Terahertz imaging.
We present THz imaging with 1D electro-optic sampling of ultrashort THz pulses by multichannel balanced detection. Using a lock-in technique, it combines the advantage of a high signal to noise ratio along with the fast acquisition time of multichannel detection. The object is probed by a line focus and the resolution can be adjusted. The performance of the system is demonstrated exemplarily by imaging two objects.
Pradarutti
B
B
Fraunhofer Institute for Applied Optics and Precision Engineering (IOF), Albert-Einstein-Str. 7, 07745 Jena, Germany. boris.pradarutti@iof.fraunhofer.de
Müller
R
R
Matthäus
G
G
Brückner
C
C
Riehemann
S
S
Notni
G
G
Nolte
S
S
Tünnermann
A
A
D017076:Computer-Aided Design; D004581:Electronics / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007090:Image Interpretation, Computer-Assisted / Q000295:instrumentation*; D007834:Lasers; D007909:Lenses; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D055053:Terahertz Radiation; D055068:Terahertz Spectroscopy / Q000295:instrumentation*