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首页> 外文期刊>IEEE Journal of Quantum Electronics >Modulation Properties of an Extended Cavity Diode Laser and Dynamic Mode Splitting
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Modulation Properties of an Extended Cavity Diode Laser and Dynamic Mode Splitting

机译：扩展腔二极管激光器和动态模式分裂的调制特性

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摘要

We have found a fine structure in the frequency dependence of modulation efficiency of a diode laser (DL) with a strong selective optical feedback. The FM response of an extended cavity diode laser (ECDL) to the microwave current modulation has two peaks whose frequencies are close to the intermode frequency of the laser longitudinal modes. The frequency splitting of the peaks depends on the power of laser radiation and on the difference between the frequency of operating ECDL mode and the frequency of the closest DL mode. We have observed similar splitting in AM noise spectra with the same type of dependencies on power and aforementioned frequency detuning. The peculiarity of the AM noise spectrum has been observed and explained previously by nonlinear interaction of fields in the active region of a DL that results in the frequency splitting of the modes. This dynamic splitting of the laser cavity modes explains the specific features of the modulation characteristics.
机译：我们在二极管激光器（DL）的调制效率的频率依赖性中找到了具有强的选择性光学反馈的精细结构。扩展腔二极管激光器（ECDL）对微波电流调制的FM响应具有两个峰值，其频率接近激光纵向模式的相交频率。峰的频率分离取决于激光辐射的功率以及在操作ECDL模式的频率和最近的DL模式的频率之间的功率。我们在AM噪声光谱中观察到类似的拆分，具有相同类型的功率和上述频率抗谐波的依赖性。已经观察到AM噪声谱的特殊性，并通过DL的有源区中的场的非线性相互作用来观察和解释，这导致模式的频率分裂。这种激光腔模式的动态分裂解释了调制特性的特定特征。

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