基于SBS超短脉冲激光器的介质研究

皮秒激光器在众多领域中都有广泛的应用,将纳秒量级激光器脉冲压缩至皮秒量级超短脉冲是目前获得高能量皮秒脉冲激光的常见方法之一。而基于布里渊散射(Stimulated Brillouin Scattering)的脉冲压缩系统结构简单,造价较低,是近年来较为热门的技术手段。布里渊散射脉冲压缩方案的技术关键在于介质研究。本文通过研究目前获得应用的三类介质的化学性能、物理特性以及压缩效果等,对比国内外研究现状,分析了受激布里渊散射对介质的要求以及未来的发展方向。     

Research on Er3+:ZBLAN fiber laser based on composite F-P cavity

2 μm/3 μm laser has been extensively applied to the fields of medical treatment, communication and detection. In this paper, the genetic algorithm is innovatively used to solve the fiber power transmission equation, which improves the accuracy of simulation results. According to the simulation results, a dual-wavelength Er3+:ZBLAN fiber laser based on composite Fabry-Perot (F-P) cavity was designed and constructed. A stable continuous dual-wavelength output was obtained with a pump power of 50 W. The center wavelengths were 2.79 μm and 1.59 μm, respectively, the maximum output powers were 8.19 W and 2.8 W, respectively, the slope efficiencies were 17.7% and 7.17%, respectively, and the stability of the wavelengths in 2 h were 4.6% and 3.1%, respectively.     

互注入激光器研究进展

基于互注入系统的激光器,在研究激光混沌通信,高功率激光输出方面起着重要作用,在激光加工,保密通信以及军事领域有着极其重要的价值。目前国内外的研究机构对基于互注入半导体激光器、固体激光器、光纤激光器等都开展了诸多研究。本文对国内外互注入激光器的研究进展进行了总结,分别介绍了上述三种激光器的最新研究成果,并对其前景进行了展望。     

远程激光测距技术及其进展

随着激光器和探测技术的不断进步,远程激光测距技术也得到了迅速的发展。如今远程激光测距仪已经在军事、航天、工业等领域发挥着不可替换的作用。本文介绍了目前国内外远程激光测距的现状及其研究进展,描述和分析了远程激光测距所涉及的关键技术及影响因素,对各类测距仪进行了分析和对比,并对未来远程激光测距仪的发展方向进行了总结与展望。