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Optical Engineering

Liquid prism for beam tracking and steering
Author(s): Chao Liu; Lei Li; Qiong-Hua Wang
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Paper Abstract

We propose a liquid prism based on electrowetting for wide-angle beam tracking and steering. Two transparent cubic cells which are filled with two immiscible liquids are stacked together to form the device. The two cubic cells function as two optical prisms. Via eletrowetting, we successfully control the liquid–liquid interface by changing the applied voltage on the opposite sidewalls. The device is capable of wide-angle beam tracking and steering. The experiment shows that the device can deflect and steer the light through an angle of ∼19.9  deg (+10.4  deg to −9.5  deg), and the total response time is ∼202  ms. The proposed liquid prism has a potential application such as free-space optical communications and laser detection electrowetting solar cells.

Paper Details

Date Published: 1 November 2012
PDF: 4 pages
Opt. Eng. 51(11) 114002 doi: 10.1117/1.OE.51.11.114002
Published in: Optical Engineering Volume 51, Issue 11
Show Author Affiliations
Chao Liu, Sichuan Univ. (China)
Lei Li, Sichuan Univ. (China)
Qiong-Hua Wang, Sichuan Univ. (China)

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