Polarization dependent clamping intensity inside a femtosecond filament in air

• 作者: Hao Guo Xiang Dong Tie-Jun Wang Xuan Zhang Na Chen Fukang Yin Yihai Wang Lingang Zhang Haiyi Sun Jun Liu Jiansheng Liu Baifei Shen Olga Kosareva Yuxin Leng Ruxin Li
• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2021,（10）
• 所属期刊栏目: Ultrafast Optics and Attosecond/High-field Physics
• 页码范围: 97-102
• 页数: 6页
• 语种: 英文
• DOI: 10.3788/COL202119.103201

摘要

Laser polarization and its intensity inside a filament core play an important role in filament-based applications.However,polarization dependent clamping intensity inside filaments has been overlooked to interpret the polarization-related iila-mentation phenomena.Here,we report on experimental and numerical investigations of polarization dependent clamping intensity inside a femtosecond filament in air.By adjusting the initial polarization from linear to circular,the clamping intensity is increased by 1.36 times when using a 30 cm focal length lens for filamentation.The results indicate that clamping intensity inside the filament is sensitive to laser polarization,which has to be considered to fully understand polarization-related phenomena.