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Título del libro: 2023 Conference On Lasers And Electro-Optics Europe And European Quantum Electronics Conference, Cleo/europe-Eqec 2023
Título del capítulo: Sensing of Dynamic Light-Liquid Interaction with Dual Beam Thermal Lens Spectroscopy

Autores UNAM:
JORGE LUIS DOMINGUEZ JUAREZ; RAFAEL QUINTERO TORRES; JOSE LUIS ARAGON VERA; MARIO ALAN QUIROZ JUAREZ;
Autores externos:

Idioma:

Año de publicación:
2023
Palabras clave:

Binary mixtures; Diffraction patterns; Image analysis; Interferometry; Light absorption; Probes; Pulsed lasers; Thermodynamic properties; Wavefronts; Dual beam thermal lens; Dynamic waves; Index of refraction; Liquid interactions; Temperature-induced; Thermal lens spectroscopy; Thermalization process; Visible image; Visible light; Wave-front sensing; Refractive index


Resumen:

Here we show dynamic wave-front sensing as a temperature-induced index of refraction changes for thermalization processes in liquids. Light-liquid interaction is analyzed with the help of visible image changes of a diffraction patterns response. The images were analyzed for studying dynamic of thermophysical properties of organic compounds using a pump-probe thermal lens spectroscopic system. The optical system is a dual femtosecond pulsed laser, using infrared as a pump and probing with visible light. The colinear infrared and visible light beams were focused on the cell of colorless liquids. The transmission of the visible light of the probe exhibited divergence, producing a ring pattern projected onto a screen and captured with a digital camera. The technique reported here allowed us to observe well-defined diffraction patterns from water, colorless organic compounds, and binary mixtures. Visibility and the number of rings depended on the laser power, dimensions of the cell, free convection, initial temperature conditions, and the light absorption of the liquid material. © 2023 IEEE.


Entidades citadas de la UNAM: