A new method for measuring the pulse-front distortion of arbitrary shapes in high-power ultrashort laser systems |
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| Authors: | Zuo Yan-Lei Jiang Dong-Bin Zhu Qi-Hu Dong Jun Zen Xiao-Ming Huang Xiao-Jun and Huang Zheng |
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| Institution: | Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China;Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China;Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China;Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China;Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China;Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China;Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China |
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| Abstract: | We present a new method that can be used to calculate pulse-front distortion by measuring the spectral interference of two point-diffraction fields in their overlapped district. We demonstrate, for the first time, the measurement of the pulse-front distortion of the pulse from a complex multi-pass amplification system, which exists in almost all high-power laser systems, and obtain the irregular pulse-front distribution. The method presented does not need any reference light or assumption about the pulse-front distribution, and has an accuracy of several femtoseconds. |
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| Keywords: | pulse-front distortion multi-pass amplification high-power laser system |
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