At present, plane parallel resonator is often used in multipulse laser drilling with average distribution of pulse energy.

目前，对于多脉冲激光打孔，往往都是采用平行平面腔而脉冲能量采用平均分配法。

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The relations between pump absorption losses and the waveguide cavity configuration parameters are calculated based on the Gaussian beam transformation in the plane-parallel resonator.

通过高斯光束在乎面平行腔中往返变换，计算了光泵远红外波导激光器中泵浦吸收、损耗与波导谐振腔结构参数的关系。

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Then the design methods of the parallel coupling SIR band-pass filter has been discussed, and analysed the different characteristic of the SIR resonator with the different impedance rate.

之后，用SIR的原理讨论了平行耦合带通sir滤波器的设计方法，并分析了不同阻抗比的SIR滤波器之间特性。

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