Self-organized Propagation of Femtosecond Laser Filamentation in Air
文献类型：期刊论文
| 作者 | Zhang, J ; Hao, ZQ ; Xi, TT ; Lu, X ; Zhang, Z ; Yang, H ; Jin, Z ; Wang, ZH ; Wei, ZY |
| 刊名 | Self-focusing: Past and Present
 |
| 出版日期 | 2009 |
| 卷号 | 114页码:323 |
| 关键词 | LONG-DISTANCE PROPAGATION PLASMA CHANNELS ACOUSTIC DIAGNOSTICS MOVING-FOCUS PULSES DISCHARGES ULTRASHORT SUPERCONTINUUM GASES GENERATION |
| ISSN号 | 0303-4216 |
| 通讯作者 | Zhang, J (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | A long plasma channel is formed with a length up to a few hundred meters when intense femtosecond laser pulses propagate in air. We find that the propagation of the filaments in the channel shows a very complicated process including the evolution from a single filament into two and three and even more distinct filaments periodically, and the merging of multiple Filaments into two filaments that propagate stably and fade away eventually. From the point of view of applications, the lifetime of the plasma channel can be prolonged to the order of microseconds when another sub-ns laser Pulse is introduced. The filaments' distribution is optimized using a pinhole with different diameters. Our experiments also demonstrate simultaneous triggering and guiding of large gap discharges in air by laser filaments. A new concept of "laser plasma channel propulsion" is proposed. It is demonstrated that the plasma channel can continuously propel a light paper airplane without complicated focusing optics. As for the long distance propagation of the laser pulses, the filamentation process and the surpercontinuum (SC) emission are closely dependent on the initial negative chirp and the divergence angle of the laser beam. Most of laser energy deposited in the background serves as an energy reservoir for further propagation of the filamentation. We have shown that an energy reservoir over ten times the size of the filament core (mm size) is necessary to feed a single filament undisturbed propagation. At last, the characteristics of the multiple filaments formed by pre-focused and freely propagating fs laser pulses are investigated and compared. |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [10390161, 60321003, 60478047, 10734130, 10634020, 60621063]; National Basic Research Programme of China [2007CB815101]; National Hi-tech ICF Programme |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/52451]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Zhang, J,Hao, ZQ,Xi, TT,et al. Self-organized Propagation of Femtosecond Laser Filamentation in Air[J]. Self-focusing: Past and Present,2009,114:323. |
| APA | Zhang, J.,Hao, ZQ.,Xi, TT.,Lu, X.,Zhang, Z.,...&Wei, ZY.(2009).Self-organized Propagation of Femtosecond Laser Filamentation in Air.Self-focusing: Past and Present,114,323. |
| MLA | Zhang, J,et al."Self-organized Propagation of Femtosecond Laser Filamentation in Air".Self-focusing: Past and Present 114(2009):323. |
入库方式： OAI收割
来源：物理研究所
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