应用于高速平面激光诱导荧光的激光器研究  

Study on laser for applications in high-speed planar laser induced fluorescence

作　　者：李旭东 周益平[2] 闫仁鹏 潘虎 陈德应[2] 周忠祥[1] 

机构地区：[1]哈尔滨工业大学理学院物理系,黑龙江哈尔滨150001 [2]哈尔滨工业大学可调谐激光技术重点实验室,黑龙江哈尔滨150080

出　　处：《红外与激光工程》2017年第12期13-18,共6页Infrared and Laser Engineering

基　　金：国家自然科学基金(61605032;61505042);中国博士后科学基金(2015M80263);中央高校基本科研业务费专项资金(2017018);国家重大科学仪器设备开发专项(2012YQ040164)

摘　　要：平面激光诱导荧光是一种高时间和空间分辨率、非接触的激光诊断技术,是研究流场和燃烧场的重要技术手段。高速PLIF技术相对于现有的低速PLIF技术具有众多优势,高超声速飞行器、燃烧场、空气声学和等离子体等领域的发展,需要重复频率在10 k Hz以上的高速PLIF技术对湍流场和反应场进行研究,以掌握其反应过程并进行优化。高重频、大能量脉冲激光器的缺乏是限制高速PLIF技术实现的主要原因。针对高速PLIF技术及其光源的发展状况做了全面的综述,对比说明了不同类型激光光源的特点,并对脉冲串激光器作为高速激光诊断光源的前景进行了展望。Planar laser induced fluorescence （PLIF） is a significant method to study the characteristics of flow field and combustion, owing to the advantages of non-conduction, high spatial and temporal resolutions. In comparison with existing low-speed PLIF, high-speed PLIF has a lot of advantages. High-speed PLIF with repetition rate higher than 10 kHz is necessary to study turbulent and reacting flows in order to capture the dynamics that governs the underlying physics in the fields such as supersonic and hypersonic flows, combustion and plasma physics. The lack of laser sources with high repetition rate and high pulse energy significantly limits the development of high-speed PLIF. A comprehensive overview for the development and the latest achievements of high-speed PLIF and the employed laser sources was given in this article. The characteristics of different laser sources were compared, and the pulse-burst technique was believed to be a promising source for high-speed PLIF technique. The development of pulse-burst laser used as the laser source in high-speed PLIF was predicted.

关 键 词：激光诊断 平面激光诱导荧光 固体激光器 脉冲串 

分 类 号：TN248.1[电子电信—物理电子学] TN249