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arXiv · 1308.4032

Self-induced white-light seeding laser in a femtosecond laser filament

Wei Chu·Guihua Li·Hongqiang Xie·Jielei Ni·Jinping Yao·Bin Zeng·Haisu Zhang·Chenrui Jing·Huailiang Xu·Ya Cheng·Zhizhan Xu
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Abstract

We report, for what we believe to be the first time, on the generation of remote self-seeding laser amplification by using only one 800 nm Ti:Sapphire femtosecond laser pulse. The laser pulse (~ 40 fs) is first used to generate a filament either in pure nitrogen or in ambient air in which population inversion between ground and excited states of nitrogen molecular ions is realized. Self-induced white light inside the filament is then serving as the seed to be amplified. The self-induced narrow-band laser at 428 nm has a pulse duration of ~2.6 ps with perfect linear polarization property. This finding opens new possibilities for remote detection in the atmosphere.

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Wei Chu, Guihua Li, Hongqiang Xie, Jielei Ni, Jinping Yao, Bin Zeng, Haisu Zhang, Chenrui Jing, Huailiang Xu, Ya Cheng, Zhizhan Xu. 2013-08-19. Self-induced white-light seeding laser in a femtosecond laser filament. https://doi.org/10.1088/1612-2011%2F11%2F1%2F015301

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