Title :
Can low power laser induce dimple on air-water interface?
Author :
Verma, Gunjan ; Gaurav, Abhishek ; Nair, Jisha M. ; Singh, K.P.
Author_Institution :
Dept. of Phys. Sci., IISER Mohali, Manuali, India
Abstract :
We investigate deformations of fluid interfaces caused by small (~nN) optical force of a low power laser beam under total-internal-reflection. For air-water interface deformations are undetectable, unlike recently claimed in ref. [3]. Using a critical fluid-fluid interface having weak surface tension large fluid-lens effects in the form of a bump are seen. Our observations support standard optofluidic force-balance with potential for technological applications.
Keywords :
air; deformation; laser beams; light reflection; measurement by laser beam; radiation pressure; surface tension; water; air-water interface deformations; bumping; critical fluid-fluid interface; fluid-lens effects; low-power laser beam; optical force; optofluidic force-balance; surface tension; total-internal-reflection; Biomedical optical imaging; Laser beams; Measurement by laser beam; Optical pumping; Optical reflection; Surface tension;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2013 Conference on
Conference_Location :
San Jose, CA
