Abstract
The spatiotemporal coupling distortion of large aperture ultra-high peak power laser will degrade the pulsed beam in both near-field and far-field. To accurately predict the light field distribution at the focus and compensate for the spatiotemporal coupling distortion, a single-frame measurement of full three-dimensional spatiotemporal coupling distortion is proposed based on the frequency domain separate spatial-spectral interference. The setup requires only a slit array attached to the front of an Imaging spectroradiometer. The whole procedure of carrier frequency distinguished spectral interference measurement is simulated in this study. The simulation results prove that the presented measuring method is correct and effective. The effectiveness of this method will be further verified experimentally in next step.
Highlights
coupling distortion is proposed based on the frequency domain separate spatial-spectral interference
only a slit array attached to the front of an Imaging spectroradiometer
The whole procedure of carrier frequency distinguished spectral interference measurement is simulated in this study
Summary
基于空谱干涉扫描法测量超宽带激光时空耦合特性 Measurement of spatiotemporal coupling characteristics of ultra broadband pulsed laser beam based on spatial spectrum interferometric scanning 物理学报. 基于二维材料异质结可饱和吸收体的超快激光器 Ultrafast pulse lasers based on two-dimensional nanomaterial heterostructures as saturable absorber 物理学报. 超快光脉冲照射GaAs晶体产生的干涉环 Interference rings induced by ultrafast laser pulse in GaAs crystal 物理学报.
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