We report on a novel starting design structure of highly-dispersive mirror (HDM) which combines quarter-wavelength structure and multi-cavities, introducing more wavelength-dependent storage times of incident radiation and group delay (GD). Based on such structure, a HDM with new advanced group delay dispersion (GDD) of −20 000 fs2 in the wavelength range of 1035–1045 nm is designed, fabricated and characterized. Our proposed initial multilayer structure is instructive in designing HDM aiming at introducing large GDD. Our HDM further pushes the maximum negative GDD allowed by the design’s total physical thickness to its limitation. It offers an ideal trade-off between GDD and total mirror thickness. The HDM has been applied in a fiber-chirped system, providing a considerable compensation of GDD reaching −200 000 fs2 with only 10 reflections between two mirrors, and laser pulse compression from 2.8 ps to 213 fs is realized.

中文翻译：

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具有先进群延迟色散的高色散反射镜

我们报告了一种新的高色散镜 (HDM) 起始设计结构，该结构结合了四分之一波长结构和多腔，引入了更多与波长相关的入射辐射和群延迟 (GD) 存储时间。基于这种结构，设计、制造和表征了一种在 1035-1045 nm 波长范围内具有 -20 000 fs2 的新型先进群延迟色散 (GDD) 的 HDM。我们提出的初始多层结构对于设计旨在引入大 GDD 的 HDM 具有指导意义。我们的 HDM 进一步将设计总物理厚度允许的最大负 GDD 推到了极限。它提供了 GDD 和总反射镜厚度之间的理想权衡。HDM已应用于光纤啁啾系统，