Towards a control of multiple filamentation by spatial regularization of a high-power femtosecond laser pulse
- First Online:
- Cite this article as:
- Kandidov, V., Akozbek, N., Scalora, M. et al. Appl. Phys. B (2005) 80: 267. doi:10.1007/s00340-004-1677-1
- 146 Downloads
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.