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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 19 — Sep. 10, 2012
  • pp: 20970–20979

Harmonic-seeded remote laser emissions in N2-Ar, N2-Xe and N2-Ne mixtures: a comparative study

Jielei Ni, Wei Chu, Haisu Zhang, Chenrui Jing, Jinping Yao, Huailiang Xu, Bin Zeng, Guihua Li, Chaojin Zhang, See Leang Chin, Ya Cheng, and Zhizhan Xu  »View Author Affiliations


Optics Express, Vol. 20, Issue 19, pp. 20970-20979 (2012)
http://dx.doi.org/10.1364/OE.20.020970


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Abstract

We report on the investigation on harmonic-seeded remote laser emissions at 391 nm wavelength from strong-field ionized nitrogen molecules in three different gas mixtures, i.e., N2-Ar, N2-Xe and N2-Ne. We observed a decrease in the remote laser intensity in the N2-Xe mixture because of the decreased clamped intensity in the filament; whereas in the N2-Ne mixture, the remote laser intensity slightly increases because of the increased clamped intensity within the filament. Remarkably, although the clamped intensity in the filament remains nearly unchanged in the N2-Ar mixture because of the similar ionization potentials of N2 and Ar, a significant enhancement of the lasing emission is realized in the N2-Ar mixture. The enhancement is attributed to the stronger third harmonic seed, and longer gain medium due to the extended filament.

© 2012 OSA

OCIS Codes
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(260.5950) Physical optics : Self-focusing

ToC Category:
Nonlinear Optics

History
Original Manuscript: June 11, 2012
Revised Manuscript: August 24, 2012
Manuscript Accepted: August 25, 2012
Published: August 29, 2012

Citation
Jielei Ni, Wei Chu, Haisu Zhang, Chenrui Jing, Jinping Yao, Huailiang Xu, Bin Zeng, Guihua Li, Chaojin Zhang, See Leang Chin, Ya Cheng, and Zhizhan Xu, "Harmonic-seeded remote laser emissions in N2-Ar, N2-Xe and N2-Ne mixtures: a comparative study," Opt. Express 20, 20970-20979 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-19-20970


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