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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 7 — Apr. 1, 2013
  • pp: 1104–1106

Coherent detection of terahertz pulses via gas plasma induced by few-cycle laser pulses with fixed carrier envelope phase

Jinsong Liu, Hu Wang, Kejia Wang, Zhengang Yang, and Shenglie Wang  »View Author Affiliations

Optics Letters, Vol. 38, Issue 7, pp. 1104-1106 (2013)

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The time behavior of gas plasma induced by a few-cycle laser pulse with a simultaneously incident terahertz (THz) pulse is investigated via a transient photocurrent model. The results show that the second-harmonic intensity emitted from the gas plasma can well replicate the THz waveform if the laser pulse has a fixed carrier envelope phase. Based on these we propose a approach for THz coherent detection, which could realize coherent THz detection with very low laser energies and without a bias field, and may be very useful in some fields, such as remote THz sensing.

© 2013 Optical Society of America

OCIS Codes
(260.3230) Physical optics : Ionization
(350.5400) Other areas of optics : Plasmas
(040.2235) Detectors : Far infrared or terahertz
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:

Original Manuscript: November 20, 2012
Manuscript Accepted: February 2, 2013
Published: March 25, 2013

Jinsong Liu, Hu Wang, Kejia Wang, Zhengang Yang, and Shenglie Wang, "Coherent detection of terahertz pulses via gas plasma induced by few-cycle laser pulses with fixed carrier envelope phase," Opt. Lett. 38, 1104-1106 (2013)

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