There is no threshold for the ALB to increase the laser-induced air plasmas spectral intensity.
作用激光束对谱线的增强不存在明显的阈值效应。
The photoluminescence spectrum is blue shifted with a shoulder peak, and the spectral intensity increases markedly.
荧光光谱出现裂分并发生蓝移，发射强度大幅度提高，半峰宽变窄。
The spectral intensity was proportional to the square of the product of normalized light field intensity and electronic relativity factor.
谱强度与归一化光场强度和相对论因子乘积的平方均成正比，载波包络函数使光场中电子运动的时间和空间周期减小；
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