J. Phys. IV France
Volume 137, November 2006
Page(s) 67 - 72
Publié en ligne 23 décembre 2006
35th Winter School on Wave and Quantum Acoustics
J. Bodzenta, M. Dzida and T. Pustelny
J. Phys. IV France 137 (2006) 67-72

DOI: 10.1051/jp4:2006137013

Acousto-optic lens based on interaction of narrow laser beam with cylindrical ultrasound

K. Ferria1, I. Grulkowski2 and P. Kwiek2

1  Department of Optics and Precision Mechanics, Ferhat Abbas University, 19000 Setif, Algeria
2  Institute of Experimental Physics, University of Gdansk, ul. Wita Stwosza 57, 80-952  Gdansk, Poland

(Published online 23 December 2006)

Experimental studies of narrow light beam interaction with cylindrical standing ultrasonic wave are presented. As the focusing and defocusing effects are observed, the considered arrangement appears to be an acousto-optic lens. The proposed system acts as an equivalent optical spherical lens whose focal length changes periodically. Additionally, the system based on cylindrical ultrasound serves as an efficient laser light modulator with the rise time of 100 ns. The parameters of both considered modalities (lens and modulator) can be easily controlled.

© EDP Sciences 2006