Influence of untrapped electrons on the sideband instability of electromagnetic Wig-gler free electron laser(EM-FEL)is analyzed in detail with single-particle theory.
用单粒子理论分析了未被有质动力势阱捕获的电子对电磁波泵自由电子激光边带不稳定性的影响。
The influence of laser power, welding speed and the focus position to the laser welding process as well as the assist gas to the instability of the welding process are analyzed.
分析了激光功率、焊接速度和焦点位置对焊接过程的影响以及保护气体对焊接过程不稳定性的影响。
The instability of the femtosecond laser pulses which can wash out the spectral fine structure and degrade the coherence of the generated supercontinuum has also been discussed here.
分析讨论了飞秒激光脉冲参数对超连续光谱的影响以及脉冲不稳定性对超连续光谱产生的影响情况；
With theoretical analysis and experimental discovery, I found that: the discharge of arc, which is subject to a lot of reasons, is probably the main reason for the output instability of the laser.
理论分析与实验发现：弧光放电现象的出现是造成激光器放电及输出不稳定的最主要的因素，而引起弧光放电的因素则是多方面的。
The reasons of porosities production and process instability in CO2 laser welding shipbuilding T-section aluminum alloy are also discussed.
同时，讨论了船用铝合金T型材CO2激光焊接过程中产生气孔和过程不稳定的原因。
The main defects of laser spot welding of aluminum are crater, hot crack and porosity which created by oxide film and keyhole instability,.
焊点中存在的主要缺陷是气孔，表面下塌，热裂纹，其中气孔主要为氧化膜气孔和匙孔不稳定形成的气孔。
The set of equations for RT instability of 3D laser ablation is presented and the numerical method is introduced briefly.
给出了用三维激光烧蚀不稳定性程序求解的物理方程组，简要介绍了所用的数值方法。
It is shown that the temporal growth rate of modulation instability is increased significantly in the corona region near the critical surface in laser-produced plasmas.
分析结果表明，激光等离子体的临界面附近的调制不稳定性的时间增长率较激光等离子体中其余位置处更为显著。
The plastic instability behavior of the laser-textured steel sheet with defined surface features is investigated. Comparison is made with the normal sheet taken from the same coil of meatal sheet.
试验研究了具有一定形貌及粗糙度的激光毛面薄钢板及同材质普通薄钢板的失稳行为。
The plastic instability behavior of the laser-textured steel sheet with defined surface features is investigated. Comparison is made with the normal sheet taken from the same coil of meatal sheet.
试验研究了具有一定形貌及粗糙度的激光毛面薄钢板及同材质普通薄钢板的失稳行为。
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