【摘要】 提出了球面反射镜的放大自发辐射（ＡＳＥ）方法测量小信号增益的理论模型，给出了相应的小信号增益系数的计算公式。该公式具有精确、简洁、显函数等特点。该模型有抑制光束横向分布引起的测量误差的机制。更多还原

【Abstract】 The theoretical model of measurement of small signal gain by ASE method with a spherical mirror was presented. Corresponding formula of small signal gain coefficient was given which is precise, compact and explicit. This model has the mechanism of suppressing th measuring error from the transverse distribution of spontaneous emission magnified.更多还原