Light guiding properties of soap films
1 IPR, UMR 6251, CNRS-Université Rennes 1 - F-35042 Rennes cedex, France, EU
2 URU435 LPL, Université Rennes 1 - F-35042 Rennes cedex, France, EU
Received: 5 October 2012
Accepted: 22 January 2013
The injection of a laser beam from the side in a horizontal free-standing draining soap film is reported. We observe the self-deflection of the beam that varies in a random way. The film thinning is affected by the injection and depends on the polarization of the light beam, not on the laser power. The liquid in the soap film is ejected towards the meniscus, without modifying its molecular structure. Besides, this injection seems to stabilize the film near the light beam propagation and to destabilize the film in the other zones. Consequences and applications are then discussed.
PACS: 42.25.Gy – Edge and boundary effects; reflection and refraction / 68.03.-g – Gas-liquid and vacuum-liquid interfaces / 42.50.Wk – Mechanical effects of light on material media, microstructures and particles
© EPLA, 2013