半导体激光自混频干涉技术对振幅的测量

激光自混频干涉是一种非常特别的现象 ,在许多应用中 ,通常都尽可能地避开来自各种各样的光器件反馈到激光器腔内的光 ,把它看成是有害的 ,例如 :来自光纤端面、或大型光学系统中的各个小光学镜面表面的反射光 ,这些光都能增加噪声及改变半导体激光的一些特性 ,这种性质的惊人影响已由Lenstra[1] 等人详尽描述过。然而 ,激光自混频干涉技术正是应用这种外反馈光携带的可被提取的信息对振动振幅和频率进行测量。

Self-mixing interference technique in a diode laser for measuring Amplitude

External optical feedback to the laser is interest, because of the deleterious effects in many applicalions caused by reflections from various optical components into the laser cavity, e.g. from fiber ends or in a major application from the surfaces in compact discs, which can increase intensity noise and modify the coherence properties of laser diodes. A dramatic of this nature was described by Lenstra et al. Yet, that self-mixing interference technique apply to carry information form the data of external feedback measure amplitude and frequency.