Results 51 to 60 of about 3,312 (180)

Generation of terahertz vector beams using dielectric metasurfaces via spin-decoupled phase control

Nanophotonics, 2020
Cylindrical vector beams (CVBs), being a special kind of beams with spatially variant states of polarizations, are promising in photonics applications, including high-resolution imaging, plasmon excitation, optical trapping, and laser machining. Recently,
Xu Yuehong, Zhang Huifang, Li Quan, Zhang Xueqian, Xu Quan, Zhang Wentao, Hu Cong, Zhang Xixiang, Han Jiaguang, Zhang Weili   +9 more
doaj   +1 more source

Metasurface-generating high purity narrow linewidth cylindrical vector beams: power scaling and its limitation

Frontiers in Physics, 2023
1.89 kW cylindrical vector beams (CVBs) at 1,064 nm with the 3 dB linewidth being about 0.08 nm have been generated from a narrow linewidth all-fiber linearly-polarized laser by metasurface extra-cavity conversion.
Haokun Li, Haokun Li, Lianghua Xie, Chun Zhang, Rumao Tao, Qiang Shu, Min Li, Benjian Shen, Xi Feng, Lixin Xu, Jianjun Wang   +10 more
doaj   +1 more source

Experimental Generation of Structured Light Beams through Highly Anisotropic Scattering Media with an Intensity Transmission Matrix Measurement

Photonics, 2023
Structured light beams have played important roles in the fields of optical imaging and optical manipulation. However, light fields scatter when they encounter highly anisotropic scattering media, such as biological tissue, which destroys their original ...
Qiannan Lei, Haokai Gong, Shijie Tu, Yangjian Cai, Qian Zhao   +4 more
doaj   +1 more source

Polarization converter for higher-order laser beams based on the use of forming binary diffractive optical elements as beam splitter

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2012
We propose a new approach to generating a pair of initial beams for a polarization converter that operates by summing up two opposite-sign circularly polarized beams.
S. V. Karpeev, S. N. Khonina, O. Yu. Moiseev, S. V. Alferov, A. V. Volkov   +4 more
doaj   +3 more sources

Reverse energy flow in vector modes of optical fibers

Компьютерная оптика, 2023
In this paper, the propagation of a second-order cylindrical vector beam in gradient-index and microstructured fibers is numerically simulated using the RSoft Fullwave software.
S.S. Stafeev, A.D. Pryamikov, G.K. Alagashev, V.V. Kotlyar   +3 more
doaj   +1 more source

Generation of cylindrical vector beams based on common-path interferometer with a vortex phase plate

, 2016
Cylindrical vector (CV) beams have found increasing applications in physics, biology, and chemistry. To generate CV beams, interferometric technique is popularly adopted due to its flexibility.
Liang, Yansheng, Yu, Xianghua, Yan, Shaohui, Yao, Baoli, Min, Junwei, Lei, Ming   +5 more
core   +1 more source

Formation of high-order cylindrical vector beams with sector sandwich structures

Компьютерная оптика, 2022
Complex polarization-phase transformations are considered, which are implemented using easy-to-manufacture optical elements. The manufacturing technology of such elements is based on the axially symmetric discretization of the required polarization and ...
S.V. Karpeev, V.V. Podlipnov, S.A. Degtyarev, A.M. Algubili   +3 more
doaj   +1 more source

Mode-Specific Coupling of Nanoparticle-on-Mirror Cavities with Cylindrical Vector Beams

Nanocavities formed by ultrathin metallic gaps permitthe reproducibleengineering and enhancement of light-matter interaction, withmode volumes reaching the smallest values allowed by quantum mechanics.While the enhanced vacuum field in metallic nanogaps ...
Vento, Valeria, Verlekar, Sachin Suresh, Roelli, Philippe, Galland, Christophe   +3 more
core   +2 more sources

Statistics properties of a cylindrical vector partially coherent beam

Optics Express, 2011
Cylindrical vector partially coherent beam is introduced as a natural extension of cylindrical vector coherent beam based on the unified theory of coherence and polarization. Analytical propagation formula for the cross-spectral density matrix of a cylindrical vector partially coherent beam passing through paraxial ABCD optical system is derived based ...
Yiming, Dong, Yangjian, Cai, Chengliang, Zhao, Min, Yao   +3 more
openaire   +2 more sources

Microstructured suspended core fiber for cylindrical vector beams propagation

, 2015
A suspended core fiber based on lead silicate glass has been fabricated to generate doughnut beams. Preliminary results demonstrated a potential to be a good candidate for fiber based cylindrical vector beams generation and ...
Heike Ebendoff-Heidepriem, Tanya M. Monro, Shahraam Afshar Vahid, Yinlan Ruan, Hong Ji, Wen Qi Zhang, Ebendoff-Heidepriem, H., Monro, T., Ji, H., Ruan, Y., Zhang, W., Vahid, S.   +11 more
core   +1 more source