Abstract
We demonstrate a new method for a systematic, dynamic, high-speed, spatio-temporal control of femtosecond light filamentation in BK7 as a particular example of nonlinear medium. This method is based on using coherent conjugate asymmetric Bessel-Gaussian beams to control the far-field intensity distribution and in turn control the filamentation location. Such spatio-temporal control allows every femtosecond pulse to have a unique intensity distribution that results in the generation of structured filamentation patterns on demand. The switching speed of this technique is dependent on the rise time of the acousto-optic deflector, which can operate in the MHz range while having the ability to handle high peak power pulses that are needed for nonlinear interactions. The proposed and demonstrated spatio-temporal control of structured filaments can enable generation of large filament arrays, opto-mechanical manipulations of water droplets for fog clearing, as well as engineered radiofrequency plasma antennas.
Original language | English |
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Pages (from-to) | 19362-19372 |
Number of pages | 11 |
Journal | Optics Express |
Volume | 29 |
Issue number | 13 |
DOIs | |
State | Published - 21 Jun 2021 |
Externally published | Yes |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics