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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 13 — Jul. 1, 2013
  • pp: 2268–2270

Wave shape recovery for terahertz pulse field detection via photoconductive antenna

Jinsong Liu, Si Zou, Zhengang Yang, Kejia Wang, and Kefei Ye  »View Author Affiliations

Optics Letters, Vol. 38, Issue 13, pp. 2268-2270 (2013)

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For photoconductive (PC) antennae used as terahertz (THz) detectors, traditional data processing methods should be improved because the space-charge and radiation field screening effects and the time dependence of photocarriers density have not been considered. Through developing a double-probe-pulse THz detection technique and using an equivalent-circuit model to describe PC antennae, we present a new method to restore the THz-field wave shape from the measurement data of currents between two electrodes on the antenna. This method is verified to be effective through building a special THz time-domain spectroscopy system with double probes. This work is significant for the accurate determination of pulse THz fields.

© 2013 Optical Society of America

OCIS Codes
(040.1880) Detectors : Detection
(040.5150) Detectors : Photoconductivity
(040.2235) Detectors : Far infrared or terahertz
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:

Original Manuscript: April 25, 2013
Manuscript Accepted: May 21, 2013
Published: June 25, 2013

Jinsong Liu, Si Zou, Zhengang Yang, Kejia Wang, and Kefei Ye, "Wave shape recovery for terahertz pulse field detection via photoconductive antenna," Opt. Lett. 38, 2268-2270 (2013)

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