Kerr非线性对有源光学系统中Wannier-Stark态稳定性的影响
Kerr nonlinearity effect on the stability of Wannier-Stark states in active optical systems
AI总结：
研究一维耦合光学谐振器链中Kerr非线性对Wannier-Stark激光模式稳定性的影响，通过数值模拟与微扰理论解释单色激光的失稳机制。
摘要：
本文对一维耦合光学谐振器链的动力学进行了解析和数值研究，该系统具有保守三次非线性以及由非线性损耗饱和的增益。谐振器本征频率对其索引的线性依赖，使得可以将Wannier-Stark态用作激光模式。数值模拟表明，谐振频率对光强的依赖强烈影响Wannier-Stark态的稳定性。为解释观察到的基于Wannier-Stark态的单色激光失稳现象，本文发展了一种简单的微扰理论，并将其与数值模拟所得数据进行了比较。
英文摘要：
The paper provides an analytical and numerical investigation of the dynamics of a one-dimensional chain of coupled optical resonators with conservative cubic nonlinearity and the gain saturated by nonlinear losses. The linear dependency of the resonator eigenfrequencies on their indexes makes it possible to use Wannier-Stark states as lasing modes. Numerical simulations have shown that the dependency of the resonant frequencies on the light intensity strongly affects the stability of Wannier-Stark states. To explain the observed destabilization of monochromatic lasing based on Wannier-Stark states a simple perturbation theory has been developed and compared with the data obtained in the numerical simulations.
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