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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 3 — Feb. 10, 2014
  • pp: 3151–3156

Generation of an air laser at extended distances by femtosecond laser filamentation with telescope optics

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

Optics Express, Vol. 22, Issue 3, pp. 3151-3156 (2014)

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We present the generation of self-induced-white-light-seeded lasing action of nitrogen molecules in air by a Ti:sapphire femtosecond laser (800nm, 5.5mJ) and demonstrate that such lasing action is strongly influenced by external focusing conditions. It is found that the self-seeded lasing signal of N2+ at ~391 nm decreases dramatically by orders of magnitude and ultimately disappears when the focal length of an external lens increases from 0.5 m to 1 m. By using a telescope, it is shown that such limitation can be overcome and the 391 nm lasing can be controlled to occur at remotely designated distance, providing a possibility for practical applications in standoff spectroscopy.

© 2014 Optical Society of America

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

ToC Category:
Lasers and Laser Optics

Original Manuscript: January 3, 2014
Revised Manuscript: January 20, 2014
Manuscript Accepted: January 27, 2014
Published: February 3, 2014

Chenrui Jing, Haisu Zhang, Wei Chu, Hongqiang Xie, Jielei Ni, Bin Zeng, Guihua Li, Jinping Yao, Huailiang Xu, Ya Cheng, and Zhizhan Xu, "Generation of an air laser at extended distances by femtosecond laser filamentation with telescope optics," Opt. Express 22, 3151-3156 (2014)

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