摘要
3μm~5μm中红外激光处于大气窗口波段,对应着众多原子或分子的特征吸收峰,在医疗诊断、大气环境监测、空间通信以及光电对抗等诸多领域具有非常重要的应用价值。在这些应用领域,人们往往要求光源拥有窄谱宽和快速波长调谐功能,而窄谱宽激光具有较小的谱宽、能量集中,是满足这些应用的理想光源。总结了实现窄谱宽3μm~5μm中红外激光输出的Fe^(2+)/Cr^(2+)离子掺杂固体激光器和氟化物光纤激光器谱宽压缩技术,以量子级联激光器为例,展示了几种激光稳频的措施,重点阐述了结构紧凑、全固化的中红外光参量振荡器的调谐原理和压缩谱宽所采取的技术,对课题组在窄谱宽光参量振荡器方面的研究工作进行了介绍,并对窄谱宽中红外激光技术的研究前景进行了展望。
3μm~5μm is one of the transmission windows of the atmosphere,including many atoms or molecules’characteristic absorption peaks.3μm~5μm laser souses have wide applications,such as medical diagnosis,environmental monitoring,spectral analysis,military countermeasure,and so on.In these application fields,light sources are often required to have narrow linewidth and wavelength tuning capability.Narrow-linewidth laser is an ideal light source for these applications due to its small spectrum range and concentrative energy.The technology of narrow-linewidth of 3μm~5μm laser were summarized,including the linewidth compression method of the Fe^(2+)/Cr^(2+)ion-doped solid-state laser and fluoride fiber laser,and several methods of quantum cascade laser frequency stabilization were discussed.The compact and all-solid-state mid-infrared optical parametric oscillator was mainly introduced.And the related research work of our group on the narrow linewidth of an optical parametric oscillator was introduced.Finally,the research prospect of the narrow-linewidth mid-infrared laser has been prospected.
作者
吕国瑞
卞进田
温佳起
孔辉
徐海萍
郭磊
王荣庆
LÜGuorui;BIAN Jintian;WENG Jiaqi;KONG Hui;XU Haiping;GUO Lei;WANG Rongqing(College of Electronic Engineering,National University of Defense Technology,Hefei 230037,China;School of Mechanics and Optoelectronic Physics,Anhui University of Science and Technology,Huainan 232001,China)
出处
《激光技术》
CAS
CSCD
北大核心
2023年第6期742-750,共9页
Laser Technology
基金
国家自然科学基金资助项目(62105003)
安徽省自然科学基金资助项目(2108085QA29)
先进激光技术安徽省实验室主任基金资助项目(AHL2020ZR03)。
关键词
激光技术
窄谱宽
固体激光器
光纤激光器
光参量振荡器
laser technique
narrow-linewidth
solid-state laser
fiber laser
optical parametric oscillator
