光学
连贯性(哲学赌博策略)
物理
脉搏(音乐)
相干理论
相干时间
连贯度
相互连贯
超短脉冲
脉冲整形
自聚焦
啁啾声
高斯分布
脉冲持续时间
梁(结构)
激光器
相干长度
激光束
量子力学
超导电性
探测器
作者
Huilong Liu,Zhenhua Du,Yuzhao Li,Hong Chen,Yanfei Lü
出处
期刊:Optics Express
[Optica Publishing Group]
日期:2023-01-26
卷期号:31 (5): 7336-7336
被引量:4
摘要
Based on the coherence theory for non-stationary optical fields, we introduce a new class of partially coherent pulse sources with multi-cosine-Gaussian correlated Schell-model (MCGCSM) and derive the analytic expression for the temporally mutual coherence function (TMCF) of an MCGCSM pulse beam when it propagates through dispersive media. The temporally average intensity (TAI) and the temporal degree of coherence (TDOC) of the MCGCSM pulse beams spreading in dispersive media are investigated numerically, respectively. Our results show that over propagation distance, the evolution of pulse beams is from the primary single beam into multiple subpulses or form flat-topped TAI distributions by controlling source parameters. Moreover, when the chirp coefficient s < 0, the MCGCSM pulse beams through dispersive media will show the characteristics of two self-focusing processes. The reason why there are two self-focusing processes is explained from the perspective of physical meaning. The results in this paper can open the applications of pulse beams in multiple pulse shaping and laser micromachining and material processing.
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