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首页> 外文期刊>Optics Communications: A Journal Devoted to the Rapid Publication of Short Contributions in the Field of Optics and Interaction of Light with Matter >Quasi single-shot two-pulse tilted pulse front autocorrelator coupled with spatial chirp and spectral divergence monitor for ultrashort pulsed laser beams
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Quasi single-shot two-pulse tilted pulse front autocorrelator coupled with spatial chirp and spectral divergence monitor for ultrashort pulsed laser beams

机译：准单次双脉冲倾斜脉冲前自动填充器与空间啁啾和用于超短脉冲激光束的光谱发散监视器耦合

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摘要

Simultaneous single-shot unambiguous detection and measurement of pulse front tilt, spatial chirp, spectral divergence and pulse width has been carried out using two-pulse tilted pulse-front autocorrelator (TP-TPFAC) coupled with spectral interferometry using small part of laser beam intercepted from Mach Zehnder delay unit of TP-TPFAC generating two delayed and spatially inverted pulses. Error in estimation of rotation angle of autocorrelation (AC) trace due to accidental improper positioning of CCD detector is avoided by measuring angle between AC traces corresponding to two delayed and spatially inverted pulses. Likewise, accuracy in estimation of spatial chirp is improved by using spatially resolved spectral trace of two spatially inverted pulses, as errors due to accidental improper positioning of either grating of spectrograph or CCD detector are avoided. Sensitivities and accuracies of the two methods are compared in different experimental situations. Estimated pulse parameters are found in close accordance with respective theoretical values.
机译：使用双脉冲倾斜脉冲前自动枢轴（TP-TPFAC）进行脉冲前倾倾斜，空间啁啾，光谱发散和脉冲宽度的同时单次进行一次明确的检测和测量。来自TP-TPFAC的Mach Zehnder延迟单元产生两个延迟和空间倒脉冲。通过在对应于两个延迟和空间反转脉冲的AC迹线之间的角度来避免由于意外的CCD检测器的旋转角度估计自相关的旋转角度（AC）轨迹的误差。同样，通过使用两个空间分辨的两个空间倒脉冲的光谱迹线改善了空间啁啾的精度，因为避免了由于光谱仪或CCD检测器的光栅的意外不当定位而导致的误差。在不同的实验情况下比较了这两种方法的敏感性和准确性。估计的脉冲参数依次根据各自的理论值找到。

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