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Opto-thermal manipulation with a 3 µm mid-infrared Er:ZBLAN fiber laser.
Opt Express ; 32(7): 12160-12171, 2024 Mar 25.
Article en En | MEDLINE | ID: mdl-38571047
ABSTRACT
Water has significantly high absorption around 3 µm wavelength region, originated by its fundamental OH vibrational modes. Here, we successfully demonstrate an opto-thermal manipulation of particles utilizing a 3 µm mid-infrared ErZBLAN fiber laser (adjustable from 2700 to 2826 nm) that can efficiently elevate the temperature at a laser focus with a low laser power. The 3 µm laser indeed accelerates the formation of the particle assembly by simply irradiating the laser into water. By altering the laser wavelengths, the assembling speed and size, instantaneous particle velocity, particle distribution, trapping stiffness and temperature elevation are evaluated systematically. We propose that the dynamics of particle assembly can be understood through thermo-osmotic slip flows, taking into account the effects of volume heating within the focal cone and point heating at the focus.

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Opt Express / Opt. express / Optics express Asunto de la revista: OFTALMOLOGIA Año: 2024 Tipo del documento: Article

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Opt Express / Opt. express / Optics express Asunto de la revista: OFTALMOLOGIA Año: 2024 Tipo del documento: Article