论文标题
二次孤子模式锁定的退化光学参数振荡器
Quadratic soliton mode-locked degenerate optical parametric oscillator
论文作者
论文摘要
通过识别耦合波方程与参数驱动的非线性schrödinger方程之间的相似性，我们在先前未发现的近零组速度MiSmatch的二次孤子模式锁定的变性光学参数振动器中揭示了二次孤子模式锁定的脱位光学参数振荡。我们研究二次孤子的性质，并根据系统参数将其动力学分为两个独特的分支。我们发现谐振泵和信号之间的非线性相互作用导致现象类似于分散性的两光子吸收和分散kerr效应。确定了二次孤子扰动的起源，并制定了减轻其有害作用的策略。 Terahertz Comb带宽和飞秒脉冲持续时间可在短波红外的定期螺旋二橙酸锂波导谐振器中达到，并在长波浪红外在长波红外的示例定向砷化的轴承自由空间腔。二次孤子模式锁定原理可以扩展到其他材料平台，使其成为中红外的竞争性超平脉冲和宽带梳子源体系结构。
By identifying the similarities between the coupled-wave equations and the parametrically driven nonlinear Schrödinger equation, we unveil the existence condition of the quadratic soliton mode-locked degenerate optical parametric oscillator in the previously unexplored parameter space of near-zero group velocity mismatch. We study the nature of the quadratic solitons and divide their dynamics into two distinctive branches depending on the system parameters. We find the nonlinear interaction between the resonant pump and signal results in phenomena that resemble the dispersive two-photon absorption and the dispersive Kerr effect. Origin of the quadratic soliton perturbation is identified and strategy to mitigate its detrimental effect is developed. Terahertz comb bandwidth and femtosecond pulse duration are attainable in an example periodically poled lithium niobate waveguide resonator in the short-wave infrared and an example orientation-patterned gallium arsenide free-space cavity in the long-wave infrared. The quadratic soliton mode-locking principle can be extended to other material platforms, making it a competitive ultrashort pulse and broadband comb source architecture at the mid-infrared.
