Polarization-dependent femtosecond laser filamentation in air

[Chinese Optics Letters]    2018 第 7期
作 者 | Zhongbin Zhu; Tie-Jun Wang; Yaoxiang Liu; Na Chen; Huifang Zhang; Haiyi Sun; Hao Guo; Jianhao Zhang; Xuan Zhang; Gengyu Li; Candong Liu; Zhinan Zeng; Jiansheng Liu; See Leang Chin; Ruxin Li; Zhizhan Xu  
标 签 | 320.2250, 260.5430, 300.2530.  

摘 要 |

Abstract | We report on a systematic study of the laser polarization effect on a femtosecond laser filamentation in air. By changing the laser’s ellipticity from linear polarization to circular polarization, the onset position of laser filament formation becomes farther from the focusing optics, the filament length is shorter, and less laser energy is deposited. The laser polarization effect on air filaments is supported by a simulation and analysis of the polarization-dependent critical power and ionization rates in air.

 
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