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- W4384927897 abstract "In this paper, a Gaussian-beam-coupled color polarization interference (CCPI) sensor with an adjustable digital Gaussian filter was proposed theoretically in the frequency domain. The coupling principle of a traditional color polarization interference (CPI) sensor and a Gaussian beam was investigated, and sensitivity optimization was then implemented. The formation of a doublet is related to the shape of a CPI curve, expected wavelength, and FWHM of the Gaussian beam. Based on the calculated results, the angle between the two polarizers and the obliquity of the wave plate are the two most significant adjusting parameters. The sensitivity of a CCPI sensor is approximately twofold higher than that of a traditional CPI sensor. The sensing range is also related to the FWHM of the Gaussian beam and a larger FWHM usually means a wider sensing range. We also found that the sensitivity would reach a maximum when the incident angle is near the total internal reflection angle. Besides, a longer incident wavelength usually corresponds to a higher sensitivity and the sensitivity could reach as high as 9270 nm/refractive index unit when the resonance wavelength is 977.40 nm." @default.
- W4384927897 created "2023-07-22" @default.
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- W4384927897 date "2023-07-20" @default.
- W4384927897 modified "2023-10-08" @default.
- W4384927897 title "Theoretical optimization of a frequency domain based color polarization interference sensor via coupling with Gaussian beam" @default.
- W4384927897 doi "https://doi.org/10.1364/ao.495093" @default.
- W4384927897 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37707082" @default.
- W4384927897 hasPublicationYear "2023" @default.
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