Kilowatt-level supercontinuum generation in a single-stage random fiber laser with a half-open cavity

IF 5.2 1区 物理与天体物理 Q1 OPTICS High Power Laser Science and Engineering Pub Date : 2023-08-29 DOI:10.1017/hpl.2023.66
Li Jiang, Jinming Wu, R. Song, Zilun Chen, Xiran Zhu, Fengchang Li, Kailong Li, Hanwei Zhang, J. Hou
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Abstract

The random distributed-feedback fiber laser (RFL) is a new approach to obtain a high-power stable supercontinuum (SC) source. To consider both structure simplification and high-power SC output, an innovative structure achieving a kilowatt-level SC output in a single-stage RFL with a half-open cavity is demonstrated in this paper. It consists of a fiber oscillator, a piece of long passive fiber, and a broadband coupler, among which the broadband coupler acting as a feedback device is crucial in SC generation. When the system has no feedback, the backward output power is up to 298 W under the pump power of 1185 W. When the feedback is introduced before the pump laser, the backward power loss can be reduced and the pump can be fully utilized, which could promote forward output power and conversion efficiency significantly. Under the maximum pump power of 1847 W,
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半开腔单级随机光纤激光器中千瓦级超连续谱的产生
随机分布反馈光纤激光器(RFL)是获得高功率稳定超连续介质(SC)光源的新途径。考虑到结构简化和高功率SC输出,本文展示了一种在半开腔单级RFL中实现千瓦级SC输出的创新结构。它由一个光纤振荡器、一段长无源光纤和一个宽带耦合器组成,其中宽带耦合器作为反馈器件在SC的产生中起着至关重要的作用。当系统无反馈时,在泵浦功率为1185w的情况下,反向输出功率可达298w。在泵浦激光器前引入反馈,可以减少后向功率损失,充分利用泵浦,显著提高正向输出功率和转换效率。在1847 W的最大泵功率下,
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来源期刊
High Power Laser Science and Engineering
High Power Laser Science and Engineering Physics and Astronomy-Nuclear and High Energy Physics
CiteScore
7.10
自引率
4.20%
发文量
401
审稿时长
21 weeks
期刊介绍: High Power Laser Science and Engineering (HPLaser) is an international, peer-reviewed open access journal which focuses on all aspects of high power laser science and engineering. HPLaser publishes research that seeks to uncover the underlying science and engineering in the fields of high energy density physics, high power lasers, advanced laser technology and applications and laser components. Topics covered include laser-plasma interaction, ultra-intense ultra-short pulse laser interaction with matter, attosecond physics, laser design, modelling and optimization, laser amplifiers, nonlinear optics, laser engineering, optical materials, optical devices, fiber lasers, diode-pumped solid state lasers and excimer lasers.
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