Abstract
We propose a new method for controlling randomly generated multiple filaments during the propagation of femtosecond laser pulses in optical media. The method is based on introducing a periodic amplitude modulation of the transverse beam profile. It is shown both experimentally and numerically that the introduction of a periodic mesh into a propagation path of a femtosecond near-infrared laser pulse leads to a deterministic spatial distribution of multiple filaments in the presence of initial random fluctuations. As a result, the number of filaments is increased as compared to the random case.
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42.65.Jx; 42.25.Bs; 42.60.Jf
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Kandidov, V., Akozbek, N., Scalora, M. et al. Towards a control of multiple filamentation by spatial regularization of a high-power femtosecond laser pulse. Appl. Phys. B 80, 267–275 (2005). https://doi.org/10.1007/s00340-004-1677-1
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DOI: https://doi.org/10.1007/s00340-004-1677-1