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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 11 — Jun. 2, 2014
  • pp: 12982–12993

Multichannel terahertz time-domain spectroscopy system at 1030 nm excitation wavelength

Anika Brahm, Annika Wilms, Roman J. B. Dietz, Thorsten Göbel, Martin Schell, Gunther Notni, and Andreas Tünnermann  »View Author Affiliations


Optics Express, Vol. 22, Issue 11, pp. 12982-12993 (2014)
http://dx.doi.org/10.1364/OE.22.012982


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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.

© 2014 Optical Society of America

OCIS Codes
(040.1240) Detectors : Arrays
(040.2235) Detectors : Far infrared or terahertz
(300.6495) Spectroscopy : Spectroscopy, teraherz
(110.6795) Imaging systems : Terahertz imaging

ToC Category:
Terahertz Optics

History
Original Manuscript: March 19, 2014
Revised Manuscript: May 13, 2014
Manuscript Accepted: May 14, 2014
Published: May 21, 2014

Citation
Anika Brahm, Annika Wilms, Roman J. B. Dietz, Thorsten Göbel, Martin Schell, Gunther Notni, and Andreas Tünnermann, "Multichannel terahertz time-domain spectroscopy system at 1030 nm excitation wavelength," Opt. Express 22, 12982-12993 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-11-12982


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