期刊
OPTICS LETTERS
卷 43, 期 9, 页码 1943-1946出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.43.001943
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类别
资金
- H2020 European Research Council (ERC) [678316]
We present an external interferometric setup that is able to simultaneously acquire three wavelengths of the same sample instance without scanning or multiple exposures. This setup projects onto the monochrome digital camera three off-axis holograms with rotated fringe orientations, each from a different wavelength channel, without overlap in the spatial-frequency domain, and thus allows the full reconstruction of the three complex wavefronts from the three wavelength channels. We use this new setup for three-wavelength phase unwrapping, allowing phase imaging of thicker objects than possible with a single wavelength, but without the increased level of noise. We demonstrate the proposed technique for micro-channel profiling and labelfree cell imaging. (C) 2018 Optical Society of America.
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