Parameterizing liquid crystal variable retarder structural organization with a fractal-Born approximation model

Gladish, James C.; Duncan, Donald D.

doi:10.1117/1.oe.55.5.054104

Cited by 2 publications

(1 citation statement)

References 15 publications

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“…Liquid Crystal Variable Retarders (LCVR) are optical devices made based on the fact that anisotropic liquid crystal molecules with uniaxial birefringence properties are susceptible to deflection by electric and magnetic fields [18][19][20][21], thus causing the phase of the incident light wave to be modulated.…”

Section: Principle Of Liquid Crystal Variable Retardermentioning

confidence: 99%

Study of multispectral polarization imaging in sea fog environment

Yang

et al. 2023

Front. Phys.

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Marine exploration has become a popular field of concern and research all over the world. The impact of sea fog on ocean exploration is very great, and how to carry out accurate identification of targets in the sea fog environment is a problem we urgently need to solve. In this paper, we simulated and analyzed the particle distribution characteristics of the sea fog layer by using the principle of Mie scattering, designed a spectral polarization imaging system by using Liquid Crystal Variable Retarder (LCVR) and Liquid Crystal Tunable Filter (LCTF) according to the principle of spectral spectroscopy and polarization imaging, conducted calibration experiments on liquid crystal tunable filter, and carried out experiments on visibility, wavelength and imaging distance that affect the experimental results of polarization imaging of sea fog environment. The experimental results show that the polarization decreases with the increase of imaging distance; in the typical visibility (5 km for light fog, 0.5 km for medium fog and 0.05 km for dense fog), the higher the visibility, the higher the polarization; for the typical wavelengths of visible light (450 nm, 530 nm and 670 nm), the polarization increase with the increase of wavelength.

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Section: Principle Of Liquid Crystal Variable Retardermentioning

confidence: 99%

Study of multispectral polarization imaging in sea fog environment

Yang

et al. 2023

Front. Phys.

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Liquid crystal-based Mueller matrix spectral imaging polarimetry for parameterizing mineral structural organization

Gladish

Duncan

2017

Appl. Opt.

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Herein, we discuss the remote assessment of the subwavelength organizational structure of a medium. Specifically, we use spectral imaging polarimetry, as the vector nature of polarized light enables it to interact with optical anisotropies within a medium, while the spectral aspect of polarization is sensitive to small-scale structure. The ability to image these effects allows for inference of spatial structural organization parameters. This work describes a methodology for revealing structural organization by exploiting the Stokes/Mueller formalism and by utilizing measurements from a spectral imaging polarimeter constructed from liquid crystal variable retarders and a liquid crystal tunable filter. We provide results to validate the system and then show results from measurements on a mineral sample.

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Parameterizing liquid crystal variable retarder structural organization with a fractal-Born approximation model

Cited by 2 publications

References 15 publications

Study of multispectral polarization imaging in sea fog environment

Study of multispectral polarization imaging in sea fog environment

Liquid crystal-based Mueller matrix spectral imaging polarimetry for parameterizing mineral structural organization

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