Open AccessMeasurement and modeling of electrowetting lens oscillations using digital holographic interferometry and Bessel and Legendre polynomial functions
Author(s) -
David Schipf,
WeiChih Wang
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.017274
Subject(s) - optics , electrowetting , lens (geology) , physics , holographic interferometry , oscillation (cell signaling) , amplitude , interferometry , digital holography , bessel function , holography , optoelectronics , biology , dielectric , genetics
The function of electrowetting liquid lenses is expanding beyond tunable focal length lensing. Recently, single and multi-mode oscillations on the meniscus profile of two non-miscible liquids have been used for optical phase modulation and fast focal length sweeping. To achieve a user-defined phase modulation, a prediction model of oscillation patterns and amplitudes is needed. We present digital holographic interferometry (DHI) measurements of oscillation patterns and amplitudes on a 5.8mm aperture lens up to 160 Hz, including frequency responses from 26-100 Hz. We discuss using Bessel function and Legendre polynomial models for oscillations on a conical frustum shaped electrowetting lens.