Resonance‐Induced Dispersion Tuning for Tailoring Nonsolitonic Radiation via Nanofilms in Exposed Core Fibers
Resonance‐Induced Dispersion Tuning for Tailoring Nonsolitonic Radiation via Nanofilms in Exposed Core Fibers
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DOI：
10.1002/lpor.201900418
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发表时间：
2020-05
影响因子：
11
通讯作者：
Tilman A. K. Lühder;Kay Schaarschmidt;S. Goerke;E. Schartner;H. Ebendorff‐Heidepriem;M. Schmidt
中科院分区：
文献类型：
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作者：
Tilman A. K. Lühder;Kay Schaarschmidt;S. Goerke;E. Schartner;H. Ebendorff‐Heidepriem;M. Schmidt
高效的超连续谱产生需要微调底层波导的色散。在波导系统中引入共振可以通过模式杂化和避免交叉的形成来显著改善超快超连续谱产生中的非线性动力学。以纳米薄膜功能化的裸芯光纤为例，零色散和色散发射波长在调谐斜率高于20 nm/nm的情况下分别偏移227和300 nm。提出的概念依赖于通过诱导共振的色散管理，并且可以直接扩展到其他沉积技术和薄膜几何形状，例如多层膜或2D材料。它允许创建独特的色散场景，从而定制非线性动力学和发射波长，并制作与超快非线性光子学相关的其他不适合的波导。
Efficient supercontinuum generation demands for fine‐tuning of the dispersion of the underlying waveguide. Resonances introduced into waveguide systems can substantially improve nonlinear dynamics in ultrafast supercontinuum generation via modal hybridization and formation of avoided crossings. Using the example of exposed core fibers functionalized by nanofilms with sub‐nanometer precision both zero‐dispersion and dispersive wave emission wavelengths are shifted by 227 and 300 nm, respectively, at tuning slopes higher than 20 nm/nm. The presented concept relies on dispersion management via induced resonances and can be straightforwardly extended to other deposition techniques and film geometries such as multilayers or 2D materials. It allows for the creation of unique dispersion landscapes, thus tailoring nonlinear dynamics and emission wavelengths and for making otherwise unsuitable waveguides relevant for ultrafast nonlinear photonics.