片状放大器小信号噪声增益功率谱的理论计算
Calculation of the power growth of small scale ripple for slab amplifiers
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摘要: 根据小信号的Bespalov-alanov理论,考虑光束的自由空间传输,计算了级联片状放大器小信号噪声的功率增益谱,通过比较不同参数的功率谱的变化,分析了影响功率谱强度及最大增益频率的因素。结果表明,以B积分作为非线性自聚焦效应强弱的唯一判据是不够的,除了B积分外,还应给出噪音的等级。对于级联片状放大器,考虑和不考虑光束的自由传输,极大增益的中心频率的差别很大,在空间滤波器小孔的截止频率的选择时必须考虑到这一点。Abstract: Based on the Belpalov-Talanov theory, considering the vacuum propagation of light, the power growth of small scale ripple for slab amplifiers is calculated. The factors which effect on the value and spatial maximum spatial frequencies of the power growth are analyzed.
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Key words:
- small scale ripple /
- nonlinear self-focusing /
- power growth /
- slab amplifier
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