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Terahertz ptychography
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DOI：10.1364/OL.43.000543.png)
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Abstract
En 中文
We realized a phase retrieval technique using terahertz (THz) radiation as an alternative to THz digital holography, named THz ptychography. Ptychography has been used in x-ray imaging as a groundbreaking improvement of conventional coherent diffraction imaging. Here we show that ptychography can be performed at THz frequencies too. We reconstructed an amplitude and a phase object with both simulated and real data. Lateral resolution accounts to < 2 lambda, while depth variations as low as lambda/30 can be assessed. (C) 2018 Optical Society of America
Keywords:
LINE DIGITAL HOLOGRAPHY
RESOLUTION
RECONSTRUCTION
DIFFRACTION
AMPLITUDE
OBJECTS
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