Results 151 to 160 of about 3,312 (180)

Second-harmonic generation in single CdSe nanowires by focused cylindrical vector beams

Optics Letters, 2017
Cylindrical vector beams with radial or azimuthal polarization have created great interest due to their unique focusing characteristics and focal components.
Xiao Wang, Zhouxiaosong Zeng, Xiujuan Zhuang   +2 more
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Concentric microcavities for cylindrical vector beam lasers

Optics Letters, 2020
Cylindrical vector (CV) beams with polarization singularities have attracted intense research interest because of their important applications in optical trapping and manipulation, imaging, and high-speed optical communication. In this Letter, we propose a high-speed integrated device designed to emit fundamental CV beams, including both radially and ...
Shuang Zheng, Xiang Ma, Quanan Chen, Qiaoyin Lu, Weihua Guo, Jian Wang   +5 more
openaire   +2 more sources

Coherent beam combining of cylindrical vector beams for power scaling

Optics Letters, 2023
Coherent beam combining (CBC) of cylindrical vector beams (CVBs) based on an active phase controller is proposed and demonstrated. Experimentally, two pieces of spatially variant wave plates (S-wave plate) were employed as vector mode convertors for two individual 1064-nm fiber amplifier channels. When the system was in a closed loop, a combined output
Shixin, Liu, Hang, Liu, Xuepeng, Qi, Wanjing, Peng, Yujun, Feng, Li, Chen, Zhendong, Li, Yinhong, Sun, Yi, Ma, Zhigang, Zhao, Qingsong, Gao, Zhaojun, Liu, Chun, Tang   +12 more
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Integral transformation solution of free-space cylindrical vector beams and prediction of modified Bessel-Gaussian vector beams

Optics Letters, 2007
A unified description of free-space cylindrical vector beams is presented that is an integral transformation solution to the vector Helmholtz equation and the transversality condition.
CHÜN-FANG Li
exaly   +1 more source

Cylindrical vector beam transformations and hybrid vector beams

Frontiers in Optics 2010/Laser Science XXVI, 2010
Transformations of the spin and orbital parts of cylindrical vector beams through conventional optical elements is analyzed with Jones calculus and experimentally measured by Stokes polarimetry. Generation of unique hybrid vector beams is discussed.
G. Milione, R. R. Alfano
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Dark-field imaging with cylindrical-vector beams

Applied Optics, 2006
Dark-field illumination provides an imaging mode that rejects specular light, thereby highlighting edge features. We analyze dark-field imaging by using cylindrical vector beam illumination with a confocal microscope equipped with a microstructure fiber mode filter.
David P, Biss, Kathleen S, Youngworth, Thomas G, Brown   +2 more
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Cylindrical vector beams for wireless power transfer

2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2017
This article investigates wireless power transfer in the Fresnel zone using cylindrical vector beams. First, a generalized coupling coefficient between two circular apertures in the Fresnel zone is derived. From the generalized coupling coefficient, explicit coupling coefficients between two circular (focused or unfocused) apertures supporting Gaussian,
Faris Alsolamy, Waleed Abdulaziz Alomar, Anthony Grbic   +2 more
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Scattering of a cylindrical vector beam by a sphere

Optik, 2016
Abstract The scattering of a cylindrical vector beam by a sphere is investigated within the framework of the generalized Lorenz–Mie theory (GLMT). The beam shape coefficients for cylindrical vector beams are calculated using analytical expression obtained by the integral localized approximation (ILA), and the scattering coefficients are expanded ...
Chunying Ding, Xiang’e Han, Renxian Li
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Cylindrical vector beams through amplifiers

Solid State Lasers XXVII: Technology and Devices, 2018
Vector beams that carrying orbital angular momentum (OAM) have become ubiquitous and topical in a variety of research fields. The quality of such beams usually degrades while propagating in space. Here, we report a noval technique to improve the quality of vector beams by amplifying these beams through birefringent amplifier.
Andrew Forbes, Darryl Naidoo, Igor Litvin, Nyameko Lisa, Hend Sroor   +4 more
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Optical trapping with cylindrical vector beams

2011 Functional Optical Imaging, 2011
Recent development of cylindrical vector beams prompts its application in optical trapping, which shows more effective and improved trapping efficiency in contrast to the traditional Gaussian beam of spatially homogeneous polarization. Using the T-matrix method and vectorial diffraction theory, we calculated and compared the radiation forces exerted on
null Baoli Yao, null Shaohui Yan, null Ming Lei, null Fei Peng, null Baiheng Ma, null Tong Ye   +5 more
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