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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 36, Iss. 14 — Jul. 15, 2011
  • pp: 2608–2610

Efficient terahertz emission by mid-infrared laser pulses from gas targets

Wei-Min Wang, Shigeo Kawata, Zheng-Ming Sheng, Yu-Tong Li, Li-Ming Chen, Lie-Jia Qian, and Jie Zhang  »View Author Affiliations

Optics Letters, Vol. 36, Issue 14, pp. 2608-2610 (2011)

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It is shown by simulations that terahertz (THz) radiation can be produced more efficiently by a mid-infrared laser pulse from a gas target. The THz amplitude is enhanced by 35 times as the laser wavelength increases from 1 μm to 4 μm ; a 4 μm laser at 10 15 W cm 2 produces 5 MV / cm THz radiation. The THz amplitude changes oscillatingly with increasing laser intensity for a given laser wavelength. In addition, the laser intensity threshold for the THz emission is lower for a longer laser wavelength.

© 2011 Optical Society of America

OCIS Codes
(260.5210) Physical optics : Photoionization
(320.7120) Ultrafast optics : Ultrafast phenomena
(350.5400) Other areas of optics : Plasmas
(350.5610) Other areas of optics : Radiation
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Physical Optics

Original Manuscript: January 25, 2011
Revised Manuscript: May 30, 2011
Manuscript Accepted: June 10, 2011
Published: July 11, 2011

Wei-Min Wang, Shigeo Kawata, Zheng-Ming Sheng, Yu-Tong Li, Li-Ming Chen, Lie-Jia Qian, and Jie Zhang, "Efficient terahertz emission by mid-infrared laser pulses from gas targets," Opt. Lett. 36, 2608-2610 (2011)

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