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Point diffraction interferometer with a liquid crystal monopixel
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DOI：10.1364/OE.21.008116.png)
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摘要
En 中文
In this work a novel point diffraction interferometer based on a variable liquid crystal wave plate (LCWP) has been implemented. The LCWP consists of a 3x3 cm(2) monopixel cell with parallel alignment. The monopixel cell was manufactured such that the electrode covers the entire surface except in a centered circular area of 50 mu m of diameter. This circle acts as a point perturbation which diffracts the incident wave front giving rise to a spherical reference wave. By applying a voltage to the LCWP we can change the phase of the wave front that passes through the monopixel, except at the center. Phase shifting techniques are used in order to calculate the amplitude and phase distribution of the object wave front. The system allows a digital hologram to be obtained, and by using the Fresnel diffraction integral it is possible to digitally reconstruct the different planes that constitute the three dimensional object. (c) 2013 Optical Society of America
Keyword:
DIGITAL HOLOGRAPHY
PHASE
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期刊
IF:
3.3
论文数:
6.1W
被引数:
14.3W
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