Abstract
The work present investigates the dependence of the coherence time of an individual spectral supercontinuum on the intensity of femtosecond pumping during its generation in the water jet in the absence of filament. The results obtained show that the coherence time decreases along with pump intensity increase. Experimentally and by means of numerical simulation, it is demonstrated that this is caused by an increase in the linear frequency modulation coefficient in the temporal structure, which leads to the supercontinuum spectrum broadening. The relation can be used as an alternative way to assess the SC coherence.
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The study is funded by RFBR project No. 18-32-00027.
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Melnik, M., Vorontsova, I., Putilin, S. et al. The dependence of the supercontinuum coherence time in water jet on the input radiation intensity. Appl. Phys. B 126, 60 (2020). https://doi.org/10.1007/s00340-020-7411-9
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DOI: https://doi.org/10.1007/s00340-020-7411-9