Results 41 to 50 of about 262,950 (171)

Optimal design of broadband linear-to-circular polarization conversion metasurface

Materials & Design
Due to their inherent defects, circular polarization discrimination methods involving amplitude-phase or axial ratio are obstacles of the computer software-based optimal design of broadband linear-to-circular (LTC) polarization conversion metasurfaces ...
Jiao Wang, Xin-Cheng Zhao, Yan-Nan Jiang, Wei-Qi Gu, Kai-Da Xu   +4 more
doaj   +1 more source

Generation of polarization entanglement from spatially-correlated photons in spontaneous parametric down-conversion

, 2007
We propose a novel scheme to generate polarization entanglement from spatially-correlated photon pairs. We experimentally realized a scheme by means of a spatial correlation effect in a spontaneous parametric down-conversion and a modified Michelson ...
H. de Riedmatten, Hideo Kosaka, Keiichi Edamatsu, Ryosuke Shimizu, Takashi Yamaguchi, Yasuyoshi Mitsumori   +5 more
core   +1 more source

Multifunctional Metasurface for Linear-to-Linear and Linear-to-Circular Polarization Conversion

IEEE Access
This paper presents a compact, multifunctional, passive polarization-converting metasurface (PCM) designed for linear-to-linear polarization (LTLP) and linear-to-circular polarization (LTCP) conversion across distinct, non-overlapping frequency bands ...
Mujahid Ali Shah, Mirza Shujaat Ali, Ahmed Naeem, Sadiq Ullah, Muhammad Imran, Qammer Abbasi, Huseyin Arslan   +6 more
doaj   +1 more source

Dual-Patch Polarization Conversion Metasurface-Based Wideband Circular Polarization Slot Antenna

IEEE Access, 2018
In this paper, a novel polarization conversion (PC) structure is introduced, and its use with a wideband, wide 3-dB axial-ratio (AR) beam, low-radar-cross-section (RCS) circular polarization (CP) slot antenna is suggested.
Qiang Chen, Hou Zhang
doaj   +1 more source

Polarization conversion loss in birefringent crystalline resonators [PDF]

Optics Letters, 2013
Whispering gallery modes in birefringent crystalline resonators are investigated. We experimentally investigate the XY--cut resonators made with LiNbO$_3$, LiTaO$_3$ and BBO and observe strong influence of the resonator's shape and birefringence on the quality factor of the extraordinary polarized modes.
Grudinin, Ivan S., Lin, Guoping, Yu, Nan
openaire   +3 more sources

High Levels of Circularly Polarized Emission from the Radio Jet in NGC 1275 (3C 84)

, 2004
We present multi-frequency, high resolution VLBA circular polarization images of the radio source 3C 84 in the center of NGC 1275. Our images reveal a complex distribution of circular polarization in the inner parsec of the radio jet, with local levels ...
D. C. Homan, J. F. C. Wardle, Stickel M., Wardle J. F. C.   +3 more
core   +1 more source

Manipulating polarization states of terahertz radiation using metamaterials

New Journal of Physics, 2012
We present a double-ring-chain metamaterial that enables efficient polarization conversion of terahertz waves. The experimental results and numerical simulations reveal that the linear-to-linear polarization rotation and linear-to-elliptic polarization ...
Longqing Cong, Wei Cao, Zhen Tian, Jianqiang Gu, Jiaguang Han, Weili Zhang   +5 more
doaj   +1 more source

Ultra-wideband and high-efficiency cross-polarization conversion using a double split ring shaped metasurface for C, X, and Ku-band applications

AIP Advances, 2022
Polarization converters play an important role in practical applications to manipulate the electromagnetic wave. However, the development of a polarization converter that possesses both high conversion efficiency and a wide frequency band is very ...
Thi Minh Nguyen, Huu Lam Phan, Dinh Lam Vu, Thi Quynh Hoa Nguyen, Jung-Mu Kim   +4 more
doaj   +1 more source

Metamaterial Polarization Converter Analysis: Limits of Performance

, 2012
In this paper we analyze the theoretical limits of a metamaterial converter that allows for linear-to- elliptical polarization transformation with any desired ellipticity and ellipse orientation.
A. Drezet, A. Pors, A. Roberts, A.C. Strikwerda, A.C. Strikwerda, Andrei Andryieuski, Andrei V. Lavrinenko, C. Sabah, D. Molter, D.-H. Kwon, Dmitry L. Markovich, F. Wang, J. Hao, J. Hao, J.B. Masson, J.K. Gansel, J.Y. Chin, J.Y. Chin, M. Mutlu, M. Tonouchi, Maksim Zalkovskij, P. Weis, P.U. Jepsen, R. Singh, Radu Malureanu, S.C Saha, S.X. Li, T. Arikawa, T. Kleine-Ostmann, T. Li, W. Sun, X.G. Peralta, Y. Zhao   +32 more
core   +1 more source

Polarization Entangled W State using Parametric Down-Conversion [PDF]

, 2002
An experimental scheme for preparing a polarization entangled W states from four photons emitted by parametric down-conversion is proposed. We consider two different configurations and a method of improving the yield by using single photon sources.
A. Cabello, A. Karlsson, A. Lamas-Linares, A. Zeilinger, D. Bouwmeester, D. BruBruß, D.M. Greenberger, G.-C. Guo, J. Kempe, J. Kim, J.-W. Pan, J.-W. Pan, Kiyoshi Tamaki, M. Hillery, M. Koashi, M. Murao, Masato Koashi, N. Gisin, N.D. Mermin, N.D. Mermin, N.D. Mermin, Nobuyuki Imoto, R. Cleve, S.M. Roy, T. Jennewein, T. Yamamoto, Takashi Yamamoto, V. Bužek, V. Bužek, V. Bužek, W. Dür   +30 more
core   +2 more sources