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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 11 — May. 25, 2009
  • pp: 8907–8912

Terahertz pulse radiation from argon clusters irradiated with intense femtosecond laser pulses

Takeshi Nagashima, Heijiro Hirayama, Kyoji Shibuya, Masanori Hangyo, Masaki Hashida, Shigeki Tokita, and Shuji Sakabe  »View Author Affiliations


Optics Express, Vol. 17, Issue 11, pp. 8907-8912 (2009)
http://dx.doi.org/10.1364/OE.17.008907


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Abstract

The characteristics of THz pulse radiation from argon clusters irradiated with intense femtosecond laser pulses have been investigated. The average power of the THz pulses radiated from argon clusters is ~40 times greater than that from argon gas. The enhancement of the THz radiation originates from large laser absorption by the clusters. The polarization state and the angular distribution of the power of the THz pulses show no dependence on laser polarization, which suggests that the radiation originates from laser-induced charge separation along the laser propagation direction.

© 2009 OSA

OCIS Codes
(260.5210) Physical optics : Photoionization
(300.6270) Spectroscopy : Spectroscopy, far infrared
(320.7120) Ultrafast optics : Ultrafast phenomena
(350.5400) Other areas of optics : Plasmas

ToC Category:
Ultrafast Optics

History
Original Manuscript: March 27, 2009
Revised Manuscript: May 8, 2009
Manuscript Accepted: May 9, 2009
Published: May 12, 2009

Citation
Takeshi Nagashima, Heijiro Hirayama, Kyoji Shibuya, Masanori Hangyo, Masaki Hashida, Shigeki Tokita, and Shuji Sakabe, "Terahertz pulse radiation from argon clusters," Opt. Express 17, 8907-8912 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-11-8907


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References

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