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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 14 — Jul. 5, 2010
  • pp: 15130–15143

Scaling behavior of ultrafast two-color terahertz generation in plasma gas targets: energy and pressure dependence

George Rodriguez and Georgi L. Dakovski  »View Author Affiliations


Optics Express, Vol. 18, Issue 14, pp. 15130-15143 (2010)
http://dx.doi.org/10.1364/OE.18.015130


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Abstract

Ultrafast terahertz emission from two-color generated laser plasma gas targets is studied using air and the noble gases (neon, argon, krypton, and xenon) as the generation media. Terahertz output pulse energy and power spectra are measured as function of gas species, gas pressure, and input pulse energy up to 6 mJ per pulse using a 40-fs 1-kHz Ti:sapphire laser system as the drive source. Terahertz pulse energies approaching 1 μJ per pulse with spectral content out to 40 THz and pulse duration of 35 fs is reported. A simple one dimensional transient photocurrent ionization model is used to calculate the spectra showing good agreement with experiments.

© 2010 OSA

OCIS Codes
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(260.3230) Physical optics : Ionization
(320.7120) Ultrafast optics : Ultrafast phenomena
(350.5400) Other areas of optics : Plasmas
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Ultrafast Optics

History
Original Manuscript: April 23, 2010
Revised Manuscript: June 10, 2010
Manuscript Accepted: June 28, 2010
Published: June 30, 2010

Citation
George Rodriguez and Georgi L. Dakovski, "Scaling behavior of ultrafast two-color terahertz generation in plasma gas targets: energy and pressure dependence," Opt. Express 18, 15130-15143 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-14-15130


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References

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