Opto-thermal manipulation with a 3â
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 3â
µm wavelength region, originated by its fundamental OH vibrational modes. Here, we successfully demonstrate an opto-thermal manipulation of particles utilizing a 3â
µm mid-infrared ErZBLAN fiber laser (adjustable from 2700 to 2826â
nm) that can efficiently elevate the temperature at a laser focus with a low laser power. The 3â
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