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Updated: May 26, 2026

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing
Published on: April 25, 2019
Energy transfer between laser filaments in liquid methanol
B D Strycker1, M Springer, C Trendafilova
1Institute for Quantum Studies and Department of Physics and Astronomy, Texas A&M University, 4242 TAMU, College Station, Texas 77843–4242, USA. bstryck2@physics.tamu.edu
Abstract:
We demonstrate energy exchange between two filament-forming femtosecond laser beams in liquid methanol. Our results are consistent with those of previous works documenting coupling between filaments in air; in addition, we identify an unreported phenomenon in which the direction of energy exchange oscillates at increments in the relative pulse delay equal to an optical period (2.6 fs). Energy transfer from one filament to another may be used in remote sensing and spectroscopic applications utilizing femtosecond laser filaments in water and air.

