The analytical solutions for the stead state equations of four wave mixing with an arbitrary complex coupling constant are given without the undepleted pump approximation.

在无泵浦非耗竭近似下，给出合系数为任意值时稳态四波频合波方程组解析解。

If the emitter ledge is too thick, current will flow through the undepleted ledge, which increases the emitter-size effect.

不射极突出部厚度，将会在射极突出部侧壁造成严重表面合。