论文标题
签名分散性波导内的脉冲压缩增强
Enhanced Pulse Compression within Sign-Alternating Dispersion Waveguides
论文作者
论文摘要
反复沿波导的分散符号大大增加了带宽，从而使超脑局产生（SCG）的输入峰值功率效率。在这里，我们在理论上和数字上探索了如何优化非线性脉冲压缩的标志性分散性波导，以使压缩比最大化。通过探索先前未知的SCG相效应，我们发现这些结构与这些结构所特有的新兴相位效应，在这些结构中，光谱相会收敛到抛物线分布，而不是无偿的高阶分散剂。易于压缩的相光谱与低输入功率需求的组合，然后使签名分散剂成为高质量非线性脉冲压缩的方案，可消除对高功率激光器的需求。此外，我们还展示了一种用于设计实用波导段的新方案，该方案可以将SCG脉冲压缩到接近变换的持续时间，这对于这些交替的波导的设计和通常的非线性脉冲压缩实验是不可或缺的。我们结论说，如何在集成光子平台内的分散性波导如何最大化压缩，从而显示了两个光学循环的压缩。
Repeatedly alternating the sign of dispersion along a waveguide substantially increases the bandwidth to input peak power efficiency of supercontinuum generation (SCG). Here, we explore, theoretically and numerically, how to optimize sign-alternating dispersion waveguides for nonlinear pulse compression, so that the compression ratio is maximized. By exploring a previously unknown SCG phase effect, we find emergent phase effects unique to these structures where the spectral phase converges to a parabolic profile independent of uncompensated higher-order dispersion. The combination of an easy to compress phase spectrum, with low input power requirements, then makes sign-alternating dispersion a scheme for high-quality nonlinear pulse compression that removes the need for high powered lasers. Also, we show a new scheme for the design of practical waveguide segments that can compress SCG pulses to near transform-limited durations, which is integral for the design of these alternated waveguides and in general, for nonlinear pulse compression experiments. We conclude by showing how compression can be maximized for alternating dispersion waveguides within the integrated photonics platform, showing compression to two optical cycles.
