利用光子晶体的自准直效应来调制耦合波导激光器的侧模,并用时域有限差分(FDTD)方法对五通道和九通道耦合波导激光器进行仿真,成功改变了模式的传播方向,使得相邻光场之间的相位差从π变为零。在两种耦合波导结构中分别获得了远场发散角为12°和7°的单峰,既兼顾了激光器的稳定性,又得到了高质量的光束。 The side mode of the coupled waveguide laser is modulated by the self-collimation effect of the photonic crystal, and the five-channel and nine-channel coupled waveguide lasers are simulated by the finite-difference time-domain (FDTD) method and the propagation direction of the mode is changed successfully so that the adjacent light The phase difference between the fields changes from π to zero. The single peaks with far-field divergence angles of 12 ° and 7 ° were obtained in the two kinds of coupled waveguide structures, respectively. Both the stability of the laser and the high quality beam were obtained.