VOLTAGE-CONTROLLABLE LASER OUTPUT COUPLER FOR INTEGRATED PHOTONIC DEVICES

A voltage-controllable output coupler for a laser, comprising: a liquid crystal cell that provides a change in birefringence in response to an applied voltage; and a polariser oriented with respect tothe liquid crystal cell to collectively form a variable reflectance mirror for the laser, wherein output coupling of the laser is controllable by applying voltage to the liquid crystal cell for a switching interval to switch the variable reflectance mirror from high reflectance to low reflectance, and vice versa, thus actively Q-switching or cavity dumping the laser. 种用于激光器的电压可控的输出耦合器，包括：液晶盒，该液晶盒响应于施加的电压提供双折射改变；以及，偏振器，该偏振器被相对于该液晶盒进行定向，以与该液晶盒共同形成用于该激光器的可变反射率镜；其中，该激光器的输出耦合能够通过按照切换间隔向液晶盒施加电压以将该可变反射率镜从高反射率切换到低反射率或将该可变反射率镜从低反射率切换到高反射率的方式进行控制，从而对该激光器进行主动调Q或腔倒空。