Li Zhaoyang, Ogino Jumpei, Tokita Shigeki, Kawanaka Junji
Opt Express. 2019 Apr 29;27(9):13292-13306. doi: 10.1364/OE.27.013292.
A method of 2-dimensional (2-D) space-scanned (in the x-y plane) spatiotemporal double-slit interference is used to reconstruct the 2-D pulse-front (in the x-y-t domain) of a femtosecond pulsed beam. While comparing with recent other methods, the method possesses two advantages: no reference pulse/beam is required anymore, and an arbitrarily distorted pulse-front, not just pulse-front tilt and pulse-front curvature, could be detected. Meanwhile, the influence of different factors of unknown pulsed beams and optical elements on the measurement reliability is also analyzed for engineering applications.
一种二维（2-D）空间扫描（在x-y平面）的时空双缝干涉方法被用于重建飞秒脉冲光束的二维脉冲前沿（在x-y-t域）。与最近的其他方法相比，该方法具有两个优点：不再需要参考脉冲/光束，并且可以检测任意扭曲的脉冲前沿，而不仅仅是脉冲前沿倾斜和脉冲前沿曲率。同时，还针对工程应用分析了未知脉冲光束和光学元件的不同因素对测量可靠性的影响。
