scholarly journals Propagation properties of partially coheren power-exponent-phase-vortex beam*

2022 ◽  
Vol 71 (1) ◽  
pp. 014203-014203
Author(s):  
Chen Kang ◽  
◽  
Ma Zhi-Yuan ◽  
Zhang Ming-Ming ◽  
Dou Jian-Tai ◽  
...  
Keyword(s):  
Power Exponent ◽  
Vortex Beam ◽  
Propagation Properties

scholarly journals Propagation Properties of an Off-Axis Hollow Gaussian-Schell Model Vortex Beam in Anisotropic Oceanic Turbulence

2021 ◽  
Vol 9 (10) ◽  
pp. 1139
Author(s):  
Xinguang Wang ◽  
Le Wang ◽  
Shengmei Zhao
Keyword(s):  
Dissipation Rate ◽  
Beam Width ◽  
Average Intensity ◽  
Vortex Beam ◽  
Oceanic Turbulence ◽  
Beam Characteristic ◽  
Anisotropic Coefficient ◽  
Higher Temperature ◽  
Inner Scale ◽  
Propagation Properties

Based on the extended Huygens–Fresnel principle and the power spectrum of anisotropic oceanic turbulence, the analytical expressions of the average intensity and coherence properties of an off-axis hollow Gaussian-Schell model (OAHGSM) vortex beam propagating through anisotropic oceanic turbulence were derived. The effects of turbulent ocean and beam characteristic parameters on the evolution properties of the OAHGSM vortex beam were analyzed in detail. Our numerical simulation results showed that the OAHGSM vortex beam with a larger position factor is more focusable. Meanwhile, the OAHGSM vortex beam eventually evolves into a Gaussian-like beam after propagating through the anisotropic oceanic turbulent channel. The speed of this process can be accelerated by the decrease of the hollow order, topological charge, beam width, and transverse coherence width of the beam. The results also indicated that the normalized average intensity spreads more greatly and the spectral degree of coherence decays more rapidly for the smaller dissipation rate of the kinetic energy per unit mass of fluid, the smaller anisotropic coefficient, the smaller inner scale factor, the larger dissipation rate of the mean-squared temperature, and the higher temperature–salinity contribution ratio.

Propagation properties and radiation forces of the Hermite–Gaussian vortex beam in a medium with a parabolic refractive index

2020 ◽  
Vol 59 (27) ◽  
pp. 8342 ◽  
Author(s):  
You Wu ◽  
Jinhong Wu ◽  
Zejia Lin ◽  
Xinming Fu ◽  
Huixin Qiu ◽  
...  
Keyword(s):  
Refractive Index ◽  
Vortex Beam ◽  
Radiation Forces ◽  
Propagation Properties

scholarly journals Propagation of the power-exponent-phase vortex beam in paraxial ABCD system

2016 ◽  
Vol 24 (16) ◽  
pp. 18082 ◽  
Author(s):  
Guanming Lao ◽  
Zhaohui Zhang ◽  
Daomu Zhao
Keyword(s):  
Power Exponent ◽  
Vortex Beam

Propagation Properties of Anomalous Vortex Beam in Chiral Medium

2016 ◽  
Vol 53 (9) ◽  
pp. 092601
Author(s):  
蒋胜宝 Jiang Shengbao ◽  
唐斌 Tang Bin
Keyword(s):  
Chiral Medium ◽  
Vortex Beam ◽  
Propagation Properties

scholarly journals Generation and Propagation of Partially Coherent Power-Exponent-Phase Vortex Beam

2021 ◽  
Vol 9 ◽  
Author(s):  
Hao Zhang ◽  
Xingyuan Lu ◽  
Zhuoyi Wang ◽  
A. P. Konijnenberg ◽  
Haiyun Wang ◽  
...  
Keyword(s):  
Optical Tweezers ◽  
Phase Distribution ◽  
Spatial Coherence ◽  
Power Exponent ◽  
Vortex Beam ◽  
Partially Coherent ◽  
Phase Perturbation ◽  
Potential Applications ◽  
Coherence Width ◽  
Exponential Change

We report on a partially coherent power-exponent-phase vortex beam (PC-PEPV), whose spatial coherence is controllable and the initial phase exhibits a periodic power exponential change. The PC-PEPV beam was generated experimentally with various spatial coherence widths, and its propagation properties were studied both numerically and experimentally. By modulating the topological charge (TC) and power order of the PC-PEPV beam, the structure of the vortex beam can be adjusted from circular to elliptic, triangular, quadrangle, and pentagon. When the power order is odd, the PC-PEPV beam with a negative TC can be generated, and the profiles of the PC-PEPV beam can be precisely controlled via adjusting the value of the power order. For the case of high spatial coherence width, the number of the dark cores in the polygonal intensity array of the PC-PEPV beam equals the magnitude of the TC. However, when decreasing the spatial coherence width, the dark cores vanish and the intensity gradually transforms into a polygonal light spot. Fortunately, from the modulus and phase distributions of the cross-spectral density (CSD), both the magnitude and sign of the TC can be determined. In the experiment, the modulus and phase distribution of the CSD are verified by the phase perturbation method. This study has potential applications in beam shaping, micro-particle trapping, and optical tweezers.

scholarly journals Spin-orbital coupling of quadratic-power-exponent-phase vortex beam propagating in a uniaxial crystal

2019 ◽  
Vol 28 (1) ◽  
pp. 216
Author(s):  
Houquan Liu ◽  
Shijie Deng ◽  
Hongchang Deng ◽  
Ronghui Xu ◽  
Hongyan Yang ◽  
...  
Keyword(s):  
Uniaxial Crystal ◽  
Power Exponent ◽  
Vortex Beam ◽  
Spin Orbital ◽  
Spin Orbital Coupling
Sign in / Sign up

Export Citation Format

Share Document