Results 41 to 50 of about 37,422 (280)

Design of a Transparent Metamaterial Cross Polarization Converter With Large Incident Angle Range

open access: yesIEEE Photonics Journal, 2021
In recent years, the metamaterial has become a popular and powerful tool in the electromagnetic polarization conversion design. In this paper, a flexible and transparent broadband cross-polarization-converter (CPC) was designed, fabricated and tested ...
Senfeng Lai, Yanghui Wu, Wenhua Gu
doaj   +1 more source

Polarization Converter for Satellite Systems

open access: yes, 2021
This research presents the design and characteristics of new wideband polarizer based on the square waveguide with irises. Matching and polarization characteristics of the polarizer have been simulated and optimized. Frequency dependences of the characteristics are presented. Developed polarizer can be applied in satellite information systems.
Piltyay, Stepan, Bulashenko, Andrew
openaire   +2 more sources

Polarization meta-converter for dynamic polarization states shifting with broadband characteristic

open access: yesOptics Express, 2022
Polarization, as an important property of light, has been widely discussed in modern detecting and radar systems. A polarization converter that can be used to achieve dynamic control is regarded as an excellent alternative for implementing the integrated functionalities of communication and stealth. In this work, we propose a paradigm of meta-converter
Zhe Qin   +10 more
openaire   +2 more sources

Space Detectors for Gamma Rays (100 MeV - 100 GeV): from EGRET to Fermi LAT [PDF]

open access: yes, 2015
The design of spaceborne high-energy (E>100 MeV) gamma-ray detectors depends on two principal factors: (1) the basic physics of detecting and measuring the properties of the gamma rays; and (2) the constraints of operating such a detector in space for an
Thompson, David J.
core   +2 more sources

A high-efficiency and ultrathin transmission-type circular polarization converter based on surface structure

open access: yesEPJ Applied Metamaterials, 2021
In this paper, we propose, design and fabricate a kind of ultrathin and high-efficiency circularly polarization converter based on artificially engineered surfaces in the transmission mode.
Xu Peng   +4 more
doaj   +1 more source

Time-bin modulated polarization-entangled biphotons from cavity-enhanced down-conversion [PDF]

open access: yes, 2006
We have generated a new type of biphoton state by cavity-enhanced down-conversion in a type-II phase-matched, periodically-poled KTiOPO_4 (PPKTP) crystal.
Kuklewicz, Christopher E.   +2 more
core   +2 more sources

Wavelength conversion at 10 Gb/s by four-wave mixing over a 30-nm interval [PDF]

open access: yes, 1998
We show that the use of a long semiconductor optical amplifier increases the error-free conversion interval of a four-wave mixing (FWM)-based wavelength converter.
D'Ottavi, A.   +6 more
core   +1 more source

Engineered extracellular vesicles enriched with the miR‐214/199a cluster enhance the efficacy of chemotherapy in ovarian cancer

open access: yesMolecular Oncology, EarlyView.
Loss of the miR‐214/199a cluster is associated with recurrence in ovarian cancer. Engineered small extracellular vesicles (m214‐sEVs) elevate miR‐214‐3p/miR‐199a‐5p in tumor cells, suppress β‐catenin, TLR4, and YKT6 signaling, reprogram tumor‐derived sEV cargo, reduce chemoresistance and migration, and enhance carboplatin efficacy and survival in ...
Weida Wang   +12 more
wiley   +1 more source

Magnetic-induced dual-function tunable THz polarization conversion metamaterial based on Ni-Mn-Sn shape memory alloy films

open access: yesResults in Optics, 2022
Due to the improvement in miniaturization and practicability of polarization conversion devices, the terahertz polarization control technology has been paid more and more attention.
Xiaochuan Wang   +6 more
doaj   +1 more source

Efficient and spectrally bright source of polarization-entangled photons

open access: yes, 2004
We demonstrate an efficient fiber-coupled source of nondegenerate polarization entangled photons at 795 and 1609 nm using bidirectionally pumped parametric down-conversion in bulk periodically poled lithium niobate. The single-mode source has an inferred
Albota, Marius A.   +3 more
core   +1 more source

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