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Using a plenoptic sensor to reconstruct vortex phase structures
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DOI：10.1364/OL.41.003169.png)
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A branch point problem and its solution commonly involve recognizing and reconstructing a vortex phase structure around a singular point. In laser beam propagation through random media, the destructive phase contributions from various parts of a vortex phase structure will cause a dark area in the center of the beam's intensity profile. This null of intensity can, in turn, prevent the vortex phase structure from being recognized. In this Letter, we show how to use a plenoptic sensor to transform the light field of a vortex beam so that a simple and direct reconstruction algorithm can be applied to reveal the vortex phase structure. As a result, we show that the plenoptic sensor is effective in detecting branch points and can be used to reconstruct phase distortion in a beam in a wide sense. (C) 2016 Optical Society of America
Keyword:
WAVE-FRONT SENSOR
ADAPTIVE OPTICS
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期刊
IF:
3.3
论文数:
4.0W
被引数:
7.6W
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