Optically injected quantum dot lasers: impact of nonlinear carrier lifetimes on frequency-locking dynamics
Optically injected quantum dot lasers: impact of nonlinear carrier lifetimes on frequency-locking dynamics
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DOI：
10.1088/1367-2630/14/5/053018
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发表时间：
2012-05
影响因子：
3.3
通讯作者：
Johannes Pausch;C. Otto;Egle Tylaite;N. Majer;E. Schöll;K. Lüdge
中科院分区：
文献类型：
--
作者：
Johannes Pausch;C. Otto;Egle Tylaite;N. Majer;E. Schöll;K. Lüdge
众所周知，载流子散射对量子点 (QD) 激光器件的动力学产生至关重要的影响。我们表明，光注入下 QD 激光器的动态特性也受到库仑散射过程的影响，并且可以通过能带结构工程进行优化。作为微观计算的散射寿命的函数，对光注入 QD 激光器的非线性动力学进行了数值分析。这些寿命改变了孤立 QD 激光器的开启阻尼以及光学注入下激光器的复杂分岔情况。此外，我们发现锁频范围的泵浦电流灵敏度与载流子寿命的非线性直接相关。
Carrier scattering is known to crucially affect the dynamics of quantum dot (QD) laser devices. We show that the dynamic properties of a QD laser under optical injection are also affected by Coulomb scattering processes and can be optimized by band structure engineering. The nonlinear dynamics of optically injected QD lasers is numerically analyzed as a function of microscopically calculated scattering lifetimes. These lifetimes alter the turn-on damping of the solitary QD laser as well as the complex bifurcation scenarios of the laser under optical injection. Furthermore, we find a pump current sensitivity of the frequency-locking range, which is directly related to the nonlinearity of the carrier lifetimes.