Highly-Dispersive Mirrors With Advanced Group Delay Dispersion
Highly-Dispersive Mirrors With Advanced Group Delay Dispersion
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DOI：
10.1109/lpt.2019.2959259
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发表时间：
2020-01
影响因子：
2.6
通讯作者：
Ruiyi Chen;J. Shao;Yanzhi Wang;Kesheng Guo;Yuhui Zhang;Zhihao Wang;J. Niu;Bowen Liu;Meiping Z
中科院分区：
文献类型：
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作者：
Ruiyi Chen;J. Shao;Yanzhi Wang;Kesheng Guo;Yuhui Zhang;Zhihao Wang;J. Niu;Bowen Liu;Meiping Z
提出了一种新颖的高色散镜（HDM）的初始设计结构，它将四分之一波长结构和多腔结构相结合，引入了更多的波长依赖的入射光存储时间和群延迟（GD）。基于这种结构，设计、制作了一种在1035-1045 nm波长范围内具有−20 000 fs 2的新型高阶群延迟色散（GDD）的高色散光纤。我们提出的初始多层结构是指导设计HDM旨在引入大GDD。我们的HDM进一步将设计的总物理厚度所允许的最大负GDD推到其极限。它提供了一个理想的GDD和总的反射镜厚度之间的权衡。将该方法应用于光纤啁啾系统，仅需10次反射，就能对GDD进行有效补偿，达到−200 000 fs ~ 2，实现了2.8 ps ~ 213 fs的激光脉冲压缩。
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.