| 摘要: |
| 飞秒激光等离子体光丝大气中传输的独特物理过程在航天领域具有重要的应用前景。采用仿真与实验，验证了飞秒等离子体成丝的光谱展宽特征，获得了超快等离子体光丝在不同参数特征下，覆盖从可见到红外探测系统的波谱范围，及保持系统相对稳定的特征，对于借助强激光等离子体光丝光谱进行红外特征探测具有重要的启发作用。 |
| 关键词: 超快激光成丝 等离子体光谱 红外探测 |
| DOI： |
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| 基金项目:火箭创新基金（ZH2022005） |
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| Ultrafast Laser Induced Plasma Filamentation Spectrum |
| LI Zhaoxing,ZHOU Ping,HAO Ting,SONG Haiying,LIAO Chuanjun |
| (Beijing University of Technology, Beijing 100124, China;Beijing Institute of Astronautical Systems Engineering, Beijing 100076, China;Taiyuan University of Science and Technology, Taiyuan 030024, China) |
| Abstract: |
| The unique physical process of femtosecond laser plasma optical filament transmission in the atmosphere has important application prospects in the field of aerospace. The spectral broaden-ing characteristics of femtosecond plasma filaments are verified by simulation and experiments, and the characteristics that ultrafast plasma filaments cover the spectrum range from visible to infrared detection system under different parameter characteristics and the system relative stability are obtained, which will have an important enlightening role for infrared detection with the spectra of intense laser plasma filaments. |
| Key words: Ultrafast laser filaments Plasma spectrum Infrared detection |