title: Multichannel terahertz time-domain spectroscopy system at 1030 nm excitation wavelength.
abstract: We present Terahertz (THz) imaging with a 1D multichannel time-domain spectroscopy (TDS) system which operates with a photoconductive array of 15 detection channels excited by a 1030 nm femtosecond fiber laser. The emitter and detector are photoconductive antennas based on InGaAs/InAlAs multi-layer heterostructures (MLHS). We characterized the THz optics and the resolution of the system. The performance is demonstrated by the multichannel imaging of two samples. A simultaneous measurement of 15 THz pulses with a pixel pitch of 1 mm increases the measurement speed of the TDS system by factor 15.
authors.forename: Anika
authors.initials: A
authors.lastname: Brahm
authors.forename: Annika
authors.initials: A
authors.lastname: Wilms
authors.forename: Roman J B
authors.initials: RJ
authors.lastname: Dietz
authors.forename: Thorsten
authors.initials: T
authors.lastname: Göbel
authors.forename: Martin
authors.initials: M
authors.lastname: Schell
authors.forename: Gunther
authors.initials: G
authors.lastname: Notni
authors.forename: Andreas
authors.initials: A
authors.lastname: Tünnermann