The relationship among the laser threshold, the output intensity profile and the pumping fields has been studied experimentally.
实验研究了激光器的阈值和激光器输出的光强分布与泵浦光场之间的关系。
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 results show that the threshold distance of SRRS decreases with increasing the intensity and the pulse width of the pump laser.
研究结果表明：SRRS效应的阈值距离随着泵浦光强度和脉宽的增大而变短；
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