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20 December 2022 Three-wavelength-based quantitative phase decoupling imaging
Junwei Min, Jinwei Song, Xun Yuan, Yuge Xue, Baoli Yao
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Proceedings Volume 12318, Holography, Diffractive Optics, and Applications XII; 123180R (2022) https://doi.org/10.1117/12.2642126
Event: SPIE/COS Photonics Asia, 2022, Online Only
Abstract
Measuring the refractive index (RI) and topography of samples can be realized by decoupling the obtained quantitative phase image. However, flattening the sample, changing the surrounding medium, or illuminating sample that immerse in the highly dispersive medium with different wavelength lights encounter some problems in practice. With the help of Cauchy’s dispersion formula, RI and topography can be independently calculated from a three-wavelength-based quantitative phase imaging. Neither special highly dispersive medium nor additional assistant technology is required. After characterization of the method, the capabilities for RI measurement and substance identification are demonstrated.
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Junwei Min, Jinwei Song, Xun Yuan, Yuge Xue, and Baoli Yao "Three-wavelength-based quantitative phase decoupling imaging", Proc. SPIE 12318, Holography, Diffractive Optics, and Applications XII, 123180R (20 December 2022); https://doi.org/10.1117/12.2642126
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KEYWORDS
Interferometry
Materials science
Nondestructive evaluation
Phase imaging
Refractive index
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