< BK21+ BEST Seminar Series Announcement> 

Time and Date : 11:00 ~ 12:00 Friday 11/08/2019

Place : B701, Engineering Building #2

Title : The study of acoustic vortex beams generation using synthetic magnetic fields
Abstract:
In this talk, I will show and analyze how the propagation of acoustic vortex beams in longitudinal synthetic magnetic fields is possible. I show two field configurations using a fluid contained in circulating cylinders: a uniform synthetic magnetic field hosting Laguerre-Gauss modes, and an Aharonov-Bohm flux tube hosting Bessel beams. For paraxial and non-paraxial beams, The analytical and numerical results have shown interesting features and differences from the well-studied case of electron vortex beams in magnetic fields, arising due to the vectorial nature of the acoustic wave velocity field. These results can illustrate how analogies between optical, electron and acoustic vortex beams can break down in the presence of external vector potentials. Finally, I discuss some possible connections and problems between acoustics and plasmon physics.

Presenter: Dr. Irving Rondon / IBS for Theoretical Physics of Complex Systems

Host: Prof. Kim, Donghyun, Yonsei EEE