Abstract
We propose an autocorrelator based on noncollinear second-harmonic generation effect and a pulse-width measurement program written by LabVIEW software providing online analysis, process measurement data, and real-time display of femtosecond laser pulse width. The autocorrelator is calibrated by the online self-calibration method, and an average accuracy of 1.049 fs/pixel is obtained. On this basis, we perform a verification test on a laser pulse with a center wavelength of 800 nm and a pulse width of about 90 fs; the obtained Gaussian pulse width is 95.3 fs. The test results show that the autocorrelation device can realize real-time and accurate measurement of laser pulse width within 100 fs.
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Yang, Y., Li, Y., Wang, C. et al. Study on Real-Time Measurement of Femtosecond Laser Pulse Width Based on Noncollinear Second-Harmonic Generation Effect. J Russ Laser Res 43, 389–395 (2022). https://doi.org/10.1007/s10946-022-10063-0
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DOI: https://doi.org/10.1007/s10946-022-10063-0