激光器谐振腔中辐射能量密度须按场强叠加计算

原则上,激光腔中相干光的强度应由往返光束按场强叠加计算。本文比较按场强叠加和通常按光强叠加的计算,指出:腔中各处的饱和增益和光强确有可观的偏差,但场分布和输出功率很好地相符。关键词：

RADIATION DENSITY IN LASER CAVITY CALCULATED BY FIELD STRENGTH SUPERPOSITION

On principle, the coherent light intensity in a laser cavity should be calculated according to field strength superposition of the light waves propagating back and forth in the cavity. This paper compares the calculations using the field strength superposition and that using the usual light intensity superposition. Our work indicates that the results on local saturated gain and light intensity calculations really give considerable discrepancies, but the field distribution and power output calculations agree quite well.