中红外超连续谱激励中畸形波稳定、选择性激发及精确控制研究

光学畸形波（RW）的稳定、选择激发及精确控制，是突破中红外超连续谱展宽及稳定性问题瓶颈限制的关键环节。本项目紧抓掺铥光源、中红外超连续谱的技术前沿，紧扣中红外超连续谱产生中RW问题，研究在诱导调制不稳定性条件下RW的产生机理，并率先进行掺铥激光泵浦硫系光纤生成RW演化理论模型研究。首先，深入研究RW的生命周期，进而探索RW精确控制机制，解决光谱产生突变等不稳定问题。第二，探索RW稳定传输及选择激发的实现方式，进而提升光谱长波长处能量，拓展光谱宽度。本项目将利用搭建的基于MoSe2和调制器的掺铥脉冲泵浦源和信号源泵浦硫系光纤，实现RW稳定（100 m）、选择激发（150 nm）及精确控制。对于中红外超连续谱激励中的RW，力争实现定量描述，并解决有效控制问题。项目研究成果，可为中红外超连续谱光谱突变及展宽等相关问题的解决提供理论和实践指导，将会极大地推动中红外超连续谱技术研究及应用水平的提高。

Stabilization, selective excitation and precise control of optical rouge wave (RW) are the key to break through the limitation of broadening and stability of mid-infrared supercontinuum (Mid-IR SC). In this project, we focus on the technological frontier of thulium-doped light sources and Mid-IR SC, and the RW generation in the Mid-IR SC. The generation mechanism of RW under induced modulation instability is studied, and the RW evolutionary theoretical model in chalcogenide fiber pumped by thulium-doped laser is first carried out. First, the life cycle of RW is studied in depth, and then the precise control mechanism of RW is explored to solve the instability problem such as the mutation of spectrum. Second, the realization of stable transmission and selective excitation of RW is studied, so as to enhance the energy at long wavelength and expand the spectral width. The MoSe2 and modulator-based thulium-doped pulse pump source and signal source are utilized to pump the chalcogenide fiber to realize the stability (100 m), selective excitation (150 nm) and precise control of RW. For RW in Mid-IR supercontinuum excitation, we strive to achieve a quantitative description and solve the problem of effective control. The research results of the project can provide theoretical and practical guidance for resolving the problems related to spectral mutation and broadening of the Mid-IR SC, which will greatly promote the research and application of the Mid-IR SC technology.