高功率可见光至近红外波段超连续谱光源研究进展  

Research Progress of High-Power Visible to Near-Infrared Supercontinuum Source

作　　者：江丽 宋锐[1,2,3] 侯静[1,2,3] 陈胜平[1,2,3] 张斌[1,2,3] 杨林永 宋家鑫 杨未强[1,2,3] 韩凯 Jiang Li;Song Rui;Hou Jing;Chen Shengping;Zhang Bin;Yang Linyong;Song Jiaxin;Yang Weiqiang;Han Kai(College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073,Hunan,China;Nanhu Laser Laboratory,National University of Defense Technology,Changsha 410073,Hunan,China;Hunan Provincial Key Laboratory of High Energy Laser Technology,National University of Defense Technology,Changsha 410073,Hunan,China)

机构地区：[1]国防科技大学前沿交叉学科学院,湖南长沙410073 [2]国防科技大学南湖之光实验室,湖南长沙410073 [3]国防科技大学高能激光技术湖南省重点实验室,湖南长沙410073

出　　处：《光学学报》2023年第17期227-241,共15页Acta Optica Sinica

基　　金：湖南省自然科学基金(2022JJMSXM2506)。

摘　　要：高功率可见光至近红外波段的超连续谱光源在光电对抗、光学相干层析成像和高光谱激光雷达等方面具有广泛的应用前景。最近几年,涌现了一些用于产生高功率超连续谱光源的新方法,推动了高功率超连续谱光源的进一步发展。本文从主振荡功率放大结构、随机光纤激光器结构以及多路非相干合成这三种用于高功率超连续谱产生的主流方案出发,着重介绍了近年来有代表性的高功率可见光至近红外波段超连续谱光源的研究进展,并综合分析了这三种方案的优缺点以及未来的发展潜力。Significance Supercontinuum(SC)has experienced a boom in recent decades because of its rich spectral compositions and laser characteristics.At present,the studies of SC mainly focus on power scaling,spectrum extension,and spectrum flatness improvement,among which power scaling enables abundant potential applications,such as photoelectric countermeasures,optical coherence tomography,and hyperspectral lidars.In the photoelectric countermeasure system,a high-power broadband source is employed to suppress and disturb enemy equipment.For example,the AN/AAQ-24(V)directional infrared countermeasure system jointly developed by the United States and Britain has the function of laser jamming,and the corresponding jamming range covers the entire nearinfrared waveband.In the equipment of optical coherence tomography,the material sample is scanned by a broadband source,thus achieving the reconstruction of its two-dimensional or three-dimensional image.Scanning resolution,speed,and sensitivity are three key performance parameters in this equipment,in which the scanning sensitivity can be improved by a high-power source,and the axial resolution can be enhanced by a broadband source.With these factors considered,a high-power SC source is an appropriate choice.In the hyperspectral lidar system,the active hyperspectral detection covering broadband wavelength is attractive in long-range target identification.It has been reported that the active hyperspectral detection of diffusion target has a measurement range of several hundred meters and requires the utilization of quite expensive instruments to produce and detect infrared laser radiation.The laser power is one of the main factors to determine the measurement range limit in this system.The high-power SC source has great application prospects in remote hyperspectral sensing and lidar performance enhancement due to its unique characteristics,such as good direction,broadband wavelength range,and high spectral intensity.Progress We review three major schemes generating high-power vi

关 键 词：非线性光学 高功率光纤超连续谱 渐变折射率多模光纤 光子晶体光纤 随机光纤激光器 多路非相干合成 

分 类 号：O437[机械工程—光学工程] TN248[理学—光学]