Results 11 to 20 of about 1,088,783 (177)

Measurement of optical activity by using polarization-holographic grating [PDF]

open access: yesEPJ Web of Conferences
We propose a precise method for measuring the rotation angle of the polarization plane using a polarization-holographic grating combined with a quarter-wave plate. This approach enables real-time measurements with high accuracy.
Kilosanidze Barbara   +4 more
doaj   +1 more source

A Lack of Resolved Near-Infrared Polarization Across the Face of M51 [PDF]

open access: yes, 2012
The galaxy M51 was observed using the Mimir instrument on the Perkins telescope to constrain the resolved H-band (1.6 $\mu$m) polarization across the galaxy.
Clemens, Dan P., Pavel, Michael D.
core   +2 more sources

Influence of Nanovoids Depth on the Surface Magneto-Optical Kerr Effect Modulations in Magnetic Photonic Crystal Slab

open access: yesIEEE Photonics Journal, 2017
Magnetic photonic crystal slab with nanovoids buried in Ni films were fabricated using nanosphere lithography combined with electrochemical deposition.
Xia Zhang   +6 more
doaj   +1 more source

Determination of polarization structures of an electromagnetic beam after passing through lens systems

open access: yesResults in Physics, 2020
We investigate the polarization structures of an electromagnetic (EM) beam after passing through 2-f and 4-f lens systems and possibilities to control them.
Sethuraj K. R.   +2 more
doaj   +1 more source

Full Stokes polarimetry based on the polarization-holographic diffraction element of an optimal configuration [PDF]

open access: yesEPJ Web of Conferences
The new polarization-holographic element of an optimal configuration is developed for the real-time complete analysis of the polarization state of light (for determining all Stokes parameters).
Kilosanidze Barbara   +4 more
doaj   +1 more source

Observation of Pancharatnam-Berry phase for unpolarized and partially polarized light fields

open access: yesResults in Optics, 2021
Geometric phase, owing to its topological nature and properties of fault tolerance, plays an important role in devising real world applications in both classical and quantum domain.
Bhaskar Kanseri, Rohit Gupta
doaj   +1 more source

Dual-band polarization conversions and optical diode based on bilayer T-shaped metamaterial

open access: yesResults in Physics, 2022
In this work, we propose a dual-band optical diode based on a bilayer T-shaped metamaterial. This optical diode can conveniently convert the x-polarized wave to y-polarized one at about 106 THz and convert the y-polarized to x-polarized wave at around ...
Ying-Hua Wang   +5 more
doaj   +1 more source

HST observations of the limb polarization of Titan [PDF]

open access: yes, 2014
Titan is an excellent test case for detailed studies of the scattering polarization from thick hazy atmospheres. We present the first limb polarization measurements of Titan, which are compared as a test to our limb polarization models.
Bazzon, Andreas   +2 more
core   +1 more source

Multi-Angle Polarization Index System for Pollen Type Bioaerosol Recognition

open access: yesFrontiers in Physics, 2022
In this work, we propose a high-throughput online identification method of bioaerosols based on multi-angle polarization index system (MAPIS). In the study, four categories and 10 subclasses of aerosol samples from biological and non-biological sources ...
Qizhi Xu   +8 more
doaj   +1 more source

Polarization singularities in the clear sky [PDF]

open access: yes, 2004
Ideas from singularity theory provide a simple account of the pattern of polarization directions in daylight. The singularities (two near the Sun and two near the anti-Sun) are points in the sky where the polarization line pattern has index +1/2 and the ...
Berry, M.V., Dennis, M.R., Lee, Jr, R.L.
core   +1 more source

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