基于串联双微腔同时实现不同特征的光频梳

Simultaneous Generation of Optical Frequency Combs with Different Characteristics Based on Cascaded Dual Microcavities

摘要:

在单微腔光场非线性演化方程的基础上,推导了串联双微腔的演化方程,分析了两个微腔中色散情况相反时的腔内光场特征和初始脉冲对腔内光场的影响。理论分析结果表明,串联双微腔不仅增加了更多的参数选择自由度,还可以在两个微腔中分别输出具有不同特征的光频梳,从而可以显著提高微腔光频梳的产生和利用效率。通过调节初始脉冲的脉宽、幅值和相位可以控制腔内孤子的个数和位置。本文工作对双微腔结构稳定光孤子产生和调制具有参考意义。

Abstract:

Based on the nonlinear evolution equation of optical field in a single microcavity, the evolution equation for cascaded dual microcavities is derived, and the characteristics of the intracavity optical field and the impact of initial pulse on the optical field are analyzed when the dispersions in the two microcavities are opposite. The theoretical analysis results indicate that the cascaded dual microcavities not only increase the degrees of freedom for parameter selection but can also output optical frequency combs with different characteristics from the two microcavities. This can significantly enhances the generation and utilization efficiency of microcavity frequency combs. By adjusting the width, amplitude, and phase of the initial pulse, the number and position of intracavity solitons can be controlled. This work is of reference significance for generation and modulation of stable optical solitons in dual microcavity structures.