For the certain pump wavelength and signal wavelength, it is indicated that the non collinear incident angle exists with the maximum gain bandwidth and the higher gain.

• 研究结果表明,对于一定波长的抽运光,存在一定的非共线入射角对应一定波长的信号光,使在较高的激光增益下增益带宽最大,同时温度的调谐也对增益谱的形状有部分影响。