Results 61 to 70 of about 783 (172)

Combined effect of wavelength and polarization in double-pass retinal images in the human eye [PDF]

, 2010
A polychromatic double-pass setup was developed to study the effects of wavelength and polarization on retinal image quality. The results show that the central part of the images was similar for all wavelengths (543, 633 and 780nm) and polarization ...
Pérez, Guillermo M., Bueno, Juan M., Juan M. Bueno, Guillermo M. Pérez   +3 more
core   +1 more source

Printed Liquid Crystal Optical Vortex Beam Generators

Advanced Optical Materials, Volume 12, Issue 20, July 16, 2024.
This paper demonstrates a switchable optical vortex beam generator using printed liquid crystal (LC) droplets. Results are presented that show the generation of both vortex and vector beams by altering the polarization of the input light. Experiments are supported by simulations that reveal the spatial profile of the director in the LC droplets and the
Mengmeng Li, Steve J. Elston, Chao He, Xuke Qiu, Alfonso A. Castrejón‐Pita, Stephen M. Morris   +5 more
wiley   +1 more source

Polarimetry of light scattered by surface roughness and textured films and periodic structures in nanotechnologies: a new challenge in instrumentation and modeling

EPJ Web of Conferences, 2010
Exhaustive studies in the literature detail the Mueller matrices properties through decomposition, optical entropy and depolarization formalism. It has been applied for many years in rather different fields. In radar polarimetry, mathematical basis of
Ferrieu. F.
doaj   +1 more source

Wide‐field Mueller matrix polarimetry for spectral characterization of basic biological tissues: Muscle, fat, connective tissue, and skin

Journal of Biophotonics, Volume 17, Issue 1, January 2024.
Through Mueller matrix imaging, this study investigates skin, muscle, connective tissue, and fat's polarimetric properties. It compares their characteristics and how they change with wavelength, including during meat aging. In‐vivo and ex‐vivo experiments reveal wavelength‐driven tissue property variations, notably significant in depolarization effects.
Iago Pardo, Subiao Bian, Jordi Gomis‐Brescó, Esther Pascual, Adolf Canillas, Salvador Bosch, Oriol Arteaga   +6 more
wiley   +1 more source

Singular value analysis of the Mueller matrix in comparison with eigenvalue analysis of the coherency matrix in polarization characterization of media

, 2013
Singular values of the arbitrary Mueller matrix are determined to be indicators of some polarization properties of the medium such as depolarization and diattenuation.
Baygi, Mohammad Hossein Miran, Zakeri, Arezoo; id_orcid, Madanipour, Khosro   +2 more
core   +1 more source

Visualization 6 Total diattenuation.mp4

, 2019
Total diattenuation of a rotating ceramic jug using light with a wavelength of 662 ...
Lisa Li (680208), Scott McEldowney (6306329), Russell Chipman (5778911), Juan Lopez-Tellez (5778908), Matthew Smith (326340)   +4 more
core   +1 more source

The CHARA Array Polarization Model and Prospects for Spectropolarimetry

The Astronomical Journal
Polarimetric data provide key insights into infrared emission mechanisms in the inner disks of young stellar objects (YSOs) and the details of dust formation around asymptotic giant branch (AGB) stars. While polarization measurements are well-established
Linling Shuai, John D. Monnier, Benjamin R. Setterholm, Stefan Kraus, Narsireddy Anugu, Tyler Gardner, Jean-Baptiste Le Bouquin, Gail H. Schaefer   +7 more
doaj   +1 more source

Polarization-resolved Second Harmonic microscopy in anisotropic thick tissues

, 2010
International audienceWe thoroughly analyze the linear propagation effects that affect polarization-resolved Second Harmonic Generation imaging of thick anisotropic tissues such as collagenous tissues.
Gusachenko, Ivan, Marie-Claire Schanne-Klein, Schanne-Klein, Marie-Claire, Gaël Latour, Ivan Gusachenko, Latour, Gaël   +5 more
core   +1 more source

Quantitative Mueller matrix fluorescence spectroscopy for precancer detection

, 2014
Quantitative fluorescence spectroscopic Mueller matrix measurements from the connective tissue regions of human cervical tissue reveal intriguing fluorescence diattenuation and polarizance effects.
Pradhan, A., Jagtap, J., Ghosh, N., Chatterjee, S., Chandel, S., Soni, J., Das, N.   +6 more
core   +1 more source

Investigation of polarization scatter properties using active imaging polarimetry

, 2004
This work investigates complete Mueller matrix polarization signatures in scattered light. A number of samples are studied using Mueller matrix imaging polarimetry, where samples are actively illuminated with a sequence of known polarization states.
DeBoo, Brian J.
core   +5 more sources