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arXiv · 1208.4190

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·Zhizhan Xu
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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.

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Jielei Ni, Wei Chu, Haisu Zhang, Chenrui Jing, Jinping Yao, Huailiang Xu, Bin Zeng, Guihua Li, Chaojin Zhang, See Leang Chin, Ya Cheng, Zhizhan Xu. 2012-08-21. Harmonic-seeded remote laser emissions in N2-Ar, N2-Xe and N2-Ne mixtures: a comparative study. https://doi.org/10.1364/oe.20.020970

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