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arXiv · 2208.06489

Complete numerical description of the laser-induced thermal profile in a liquid, to explain complex self-induced diffraction patterns

J. L. Domínguez-Juárez·M. A. Quiroz-Juárez·J. L. Aragón·R. Quintero-Bermúdez·R. Quintero-Torres
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Abstract

In the past, laser propagation in a fluid with heat transfer has been modeled using simplistic conduction and convection conditions yielding inaccurate predictions. Here we present a detailed numerical study describing the thermal profile of the fluid and its interaction with the laser. Furthermore, we evaluate the diffraction field in the far field produced by a pump beam impinging in the fluid and the interferometric pattern obtained normal to the propagation direction to test our model. Direct comparison between experimental results and numerical simulation allows for a complete understanding of the energy transfer from the laser to the liquid and the subsequent effect on the laser propagation. Spatial self-phase modulation and propagation control from small-phase diffraction to aberration-controlled diffraction and up to diffraction oscillation are observed and explained with our modeling.

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J. L. Domínguez-Juárez, M. A. Quiroz-Juárez, J. L. Aragón, R. Quintero-Bermúdez, R. Quintero-Torres. 2022-08-12. Complete numerical description of the laser-induced thermal profile in a liquid, to explain complex self-induced diffraction patterns. https://doi.org/10.1088/1612-202x%2Facb7f2

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