Self-induced white-light seeding laser in a femtosecond laser filament
| Autor: | Chu, Wei, Li, Guihua, Xie, Hongqiang, Ni, Jielei, Yao, Jinping, Zeng, Bin, Zhang, Haisu, Jing, Chenrui, Xu, Huailiang, Cheng, Ya, Xu, Zhizhan |
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| Rok vydání: | 2013 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/1612-2011/11/1/015301 |
| Popis: | 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. Comment: 18 pages, 5 figures |
| Databáze: | arXiv |
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