Amplitude-phase coupling and chirp in quantum-dot lasers: influence of charge carrier scattering dynamics.
Amplitude-phase coupling and chirp in quantum-dot lasers: influence of charge carrier scattering dynamics.
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DOI：
10.1364/oe.22.004867
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发表时间：
2014-03
期刊：
影响因子：
3.8
通讯作者：
B. Lingnau;W. Chow;K. Lüdge
中科院分区：
文献类型：
--
作者：
B. Lingnau;W. Chow;K. Lüdge
研究了量子点（QD）激光器的幅相耦合与载流子散射时标的关系。载流子散射过程会影响激光器件的弛豫振荡参数和频率啁啾，这两个参数是决定激光器件调制性能及其对光扰动反应的重要参数。我们发现调频/调幅响应对调制频率有很强的依赖性，这使得量子点激光器的光学响应与传统激光器件相比有所改变。此外，频率响应曲线随散射时间尺度的变化而变化，这可以优化激光对光扰动的稳定性。
We investigate the dependence of the amplitude-phase coupling in quantum-dot (QD) lasers on the charge-carrier scattering timescales. The carrier scattering processes influence the relaxation oscillation parameters, as well as the frequency chirp, which are both important parameters when determining the modulation performance of the laser device and its reaction to optical perturbations. We find that the FM/AM response exhibits a strong dependence on the modulation frequency, which leads to a modified optical response of QD lasers when compared to conventional laser devices. Furthermore, the frequency response curve changes with the scattering time scales, which can allow for an optimization of the laser stability towards optical perturbations.