Results 31 to 40 of about 441 (148)

Using polarimeter and Stokes parameters for measuring linear birefringence and diattenuation properties of optical samples

open access: yesEPJ Web of Conferences, 2010
A technique is proposed for measuring the linear birefringence and linear diattenuation of an optical sample using a polarimeter. In the proposed approach, the principal axis angle (α), phase retardance (β), diattenuation axis angle (θd), and ...
Tsung-tse Y.   +4 more
doaj   +1 more source

Polarization Aberrations in High-Numerical-Aperture Lens Systems and Their Effects on Vectorial-Information Sensing

open access: yesRemote Sensing, 2022
The importance of polarization aberrations has been recognized and studied in numerous optical systems and related applications. It is known that polarization aberrations are particularly crucial in certain photogrammetry and microscopy techniques that ...
Yuanxing Shen   +7 more
doaj   +1 more source

The polarized Sun and sky radiometer SSARA: design, calibration, and application for ground-based aerosol remote sensing [PDF]

open access: yesAtmospheric Measurement Techniques, 2020
Recently, polarimetry has been used to enhance classical photometry to infer aerosol optical properties, as polarized radiation contains additional information about the particles. Therefore, we have equipped the Sun–sky automatic radiometer (SSARA) with
H. Grob   +5 more
doaj   +1 more source

Long-wave infrared photothermoelectric detectors with ultrahigh polarization sensitivity

open access: yesNature Communications, 2023
Filter-free miniaturized polarization-sensitive photodetectors have important applications in the next-generation on-chip polarimeters. However, their polarization sensitivity is thus far limited by the intrinsic low diattenuation and inefficient photon ...
Mingjin Dai   +9 more
doaj   +1 more source

Comparative Study of Modified Mueller Matrix Transformation and Polar Decomposition Parameters for Transmission and Backscattering Tissue Polarimetries

open access: yesApplied Sciences, 2021
Mueller matrix polarimetry is widely used in biomedical studies and applications, for it can provide abundant microstructural information about tissues.
Binguo Chen   +6 more
doaj   +1 more source

Mueller Matrix Polarimetric Imaging Analysis of Optical Components for the Generation of Cylindrical Vector Beams

open access: yesCrystals, 2020
In this work, we performed a Mueller matrix imaging analysis of two commercial optical components usually employed to generate and manipulate vector beams—a radial polarizer and a liquid-crystal q-plate.
Guadalupe López-Morales   +4 more
doaj   +1 more source

Wavelength dependence of polarimetric and phase-shift characterization of a liquid crystal on silicon display [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2008
We present a full characterization of a liquid-crystal-on-silicon (LCoS) display, including a polarimetric analysis based on the Mueller-Stokes formalism, and a phase shift modulation calibration. Results for different wavelengths are compared.
Lizana A.   +5 more
doaj   +1 more source

Characterization of the Mueller Matrix: Purity Space and Reflectance Imaging

open access: yesPhotonics, 2022
Depolarization has been found to be a useful contrast mechanism in biological and medical imaging. The Mueller matrix can be used to describe polarization effects of a depolarizing material. An historical review of relevant polarization algebra, measures
Colin J. R. Sheppard   +3 more
doaj   +1 more source

Are Indices of Polarimetric Purity Excellent Metrics for Object Identification in Scattering Media?

open access: yesRemote Sensing, 2022
Polarization characteristics are significantly crucial for tasks in various fields, including the remote sensing of oceans and atmosphere, as well as the polarization LIDAR and polarimetric imaging in scattering media.
Xiaobo Li   +7 more
doaj   +1 more source

Linear diattenuation imaging of biological tissues with near infrared Mueller scanning microscopy

open access: yesBiomedical Optics Express, 2020
Among the multitude of optical polarization contrasts that can be observed in complex biological specimens, linear diattenuation (LD) imaging has received little attention. It is indeed challenging to image LD with basic polarizing microscopes because it is often relatively small in comparison with linear retardance (LR). In addition, interpretation of
Dubreuil, Matthieu   +3 more
openaire   +3 more sources

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