Results 21 to 30 of about 1,088,783 (177)

Liquid crystal based spectral control for applications in optical communication and metrology

open access: yesResults in Optics, 2020
The molecules of nematic liquid crystals (LCs), aligned in one average direction, constitute a birefringent medium. The molecules in nematic LCs of positive anisotropy (ne>no) get aligned in the direction of applied electric field due to the induced ...
Gyaprasad, Bhaskar Kanseri
doaj   +1 more source

Non-Markovian dynamics control of spin-1/2 system interacting with magnets

open access: yesNew Journal of Physics, 2021
The unavoidable interaction of an open quantum system with its surrounding environment may follow non-Markovian dynamics behavior, which causes its memory effects to play a key role in many quantum technologies.
Ying-Jie Zhang   +5 more
doaj   +1 more source

In-situ Detection Method for Microplastics in Water by Polarized Light Scattering

open access: yesFrontiers in Marine Science, 2021
Microplastics (MPs) have become the widespread contaminants, which raises concerns on their ecological hazards. In-situ detection of MP in water bodies is essential for clear assessment of the ecological risks of MPs.
Tong Liu   +11 more
doaj   +1 more source

Characterizing maser polarization: effects of saturation, anisotropic pumping and hyperfine structure [PDF]

open access: yes, 2019
The polarization of masers contains information on the magnetic field strength and direction of the regions they occur in. Many maser polarization observations have been performed over the last 30 years.
Lankhaar, Boy, Vlemmings, Wouter
core   +2 more sources

Majorization and Measures of Classical Polarization in Three Dimensions [PDF]

open access: yes, 2014
There has been much discussion in the literature about rival measures of classical polarization in three dimensions. We gather and compare the various proposed measures of polarization, creating a geometric representation of the polarization state space ...
Gamel, Omar, James, Daniel F. V.
core   +1 more source

Broadband and tunable terahertz absorption based on ethanol-treated carbon nanotube sponges

open access: yesResults in Physics, 2022
To eliminate the undesired terahertz (THz) interference and echo, broadband and tunable THz absorbing devices are urgently needed. Herein, we report a simple method to obtain an active THz absorption performance by ethanol-treated carbon nanotube sponges
Shi-Tong Xu   +4 more
doaj   +1 more source

Mueller Matrix Imaging Optimized by Uniform Illumination

open access: yesFrontiers in Physics, 2022
In this study, we present a flat-field Mueller matrix imaging system to reduce the reconstruction error caused by critical illumination. This study demonstrates that the signal-to-noise ratio (SNR) of the reconstructed images is improved by about eight ...
Wei Guo   +7 more
doaj   +1 more source

Capture and sorting of multiple cells by polarization-controlled three-beam interference [PDF]

open access: yes, 2016
For the capture and sorting of multiple cells, a sensitive and highly efficient polarization-controlled three-beam interference set-up has been developed. With the theory of superposition of three beams, simulations on the influence of polarization angle
Dayou Li   +9 more
core   +1 more source

Broadband spectral shaping using nematic liquid crystal

open access: yesResults in Physics, 2019
We demonstrate what is, to our knowledge, the first implementation of nematic liquid crystal (LC) for spectral shaping of broadband light fields. A LC cell of several microns thickness is placed between a polarizer and an analyzer.
Bhaskar Kanseri   +2 more
doaj   +1 more source

Work costs and operating regimes for different manners of system-reservoir interactions via collision model

open access: yesNew Journal of Physics, 2022
In this work, we study effects of different types of system-reservoir interactions on work costs and operating regimes of thermal machines by considering a quantum system consisting of two subsystems embedded in both independent and common reservoirs ...
Ying Wang   +3 more
doaj   +1 more source

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