Opt Lett. 2018 Jun 1;43(11):2704-2707. doi: 10.1364/OL.43.002704.
We report the development of a three-legged, high-speed, high-energy, burst-mode laser system for the simultaneous measurement of velocity and key combustion species in turbulent reacting flows. The laser system is designed to simultaneously amplify a four-pulse sequence [including a doublet pulse for particle image velocimetry (PIV) measurements] with variable pulse separations at a repetition rate up to 500 kHz and a burst duration of 1-10 ms. With the three-legged, burst-mode laser system, we demonstrate simultaneous measurements of velocity using PIV and planar laser-induced fluorescence imaging of hydroxyl and formaldehyde in a turbulent jet flame.
我们开发了一种三足式高速高能突发模式激光系统，用于同时测量湍流反应流中的速度和关键燃烧物种。该激光系统旨在以高达 500 kHz 的重复率和 1-10 ms 的突发持续时间对具有可变脉冲间隔的四脉冲序列（包括用于粒子图像测速（PIV）测量的双脉冲）进行同时放大。利用三足式突发模式激光系统，我们演示了在湍流射流火焰中使用 PIV 进行速度同步测量和通过平面激光诱导荧光成像对羟基和甲醛进行同步测量。
