scholarly journals Generation and characterization of an array of Airy-vortex beams

2020 ◽  
Vol 458 ◽  
pp. 124846 ◽  
Author(s):  
Rafael A.B. Suarez ◽  
Antonio A.R. Neves ◽  
Marcos R.R. Gesualdi
Keyword(s):  
Vortex Beams

Ptychography-based characterization of wavelength-tunable vortex beams

2021 ◽  
Author(s):  
Antonios Pelekanidis ◽  
Lars Loetgering ◽  
Stefan Witte
Keyword(s):  
Wavelength Tunable ◽  
Vortex Beams

Precise characterization of focused vortex beams

2017 ◽  
Vol 56 (9) ◽  
pp. 092501 ◽  
Author(s):  
Takahiro Saito ◽  
Yoko Takeo ◽  
Hidekazu Mimura
Keyword(s):  
Precise Characterization ◽  
Vortex Beams

scholarly journals Dynamics landscape for acoustic superradiance

2020 ◽  
Vol 378 (2177) ◽  
pp. 20200003 ◽  
Author(s):  
Cisco Gooding
Keyword(s):  
Born Approximation ◽  
Acoustic Scattering ◽  
Microscopic Level ◽  
Rotating Fluid ◽  
Analogue Gravity ◽  
Theoretical Predictions ◽  
Dynamical Features ◽  
Vortex Beams ◽  
Similarities And Differences

We analyse the behaviour of acoustic vortex beams interacting with rotating, fluid-saturated porous materials. Regions of the parameter space that exhibit distinct dynamical features are identified, with a focus on features that are relevant to the characterization of rotational superradiance. We discuss the similarities and differences between two recent proposals to observe acoustic superradiance with rotating, air-saturated sound absorbers. Finally, theoretical predictions for macroscopic acoustic scattering, obtained by averaging over interactions between the fluid and the porous material at the microscopic level, are compared with predictions of the first-Born approximation. This article is part of a discussion meeting issue ‘The next generation of analogue gravity experiments’.

Characterization of phased array-steered acoustic vortex beams

2017 ◽  
Vol 142 (1) ◽  
pp. 61-71 ◽  
Author(s):  
Jhon F. Pazos-Ospina ◽  
Joao L. Ealo ◽  
Ediguer E. Franco
Keyword(s):  
Phased Array ◽  
Vortex Beams

Characterization of tightly focused partially coherent radially polarized vortex beams

2010 ◽  
Vol 8 (5) ◽  
pp. 520-523 ◽  
Author(s):  
郭利娜 Lina Guo ◽  
唐志列 Zhilie Tang ◽  
梁重庆 Chongqing Liang ◽  
谭治良 Zhiliang Tan
Keyword(s):  
Partially Coherent ◽  
Vortex Beams ◽  
Radially Polarized

Characterization of phased array-steered acoustic vortex beams

2016 ◽  
Vol 139 (4) ◽  
pp. 2040-2040 ◽  
Author(s):  
Jhon F. Pazos-Ospina ◽  
Ediguer E. Franco ◽  
Joao L. Ealo
Keyword(s):  
Phased Array ◽  
Vortex Beams
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