Prof. Zhenjun Yang
Hebei Normal University, China
Title: Mode transformation of light beams and implementation of chiral light fields in nonlocal media
Abstract:
Nonlocal nonlinear media can support stable propagation of various two-dimensional and three-dimensional optical soliton forms, exhibiting richer and more intriguing properties compared to light transmission in traditional localized media. By utilizing diverse beam parameters, light control can be achieved, enabling the generation of a wide variety of optical field pattern transformations. We employed multiple types of beams to construct distinct complex optical field patterns, investigated their propagation dynamics under different initial angular momentum conditions, analyzed various forms of motion such as rotational and non-rotational, shape-changing or shape-invariant, and proposed control methods for these optical field pattern transformations. Additionally, cross-phase also possesses orbital angular momentum. Through studying the propagation pattern transformations of multiple cross-phase beams, we elucidated the role of cross-phase in transmission evolution and discussed the resulting chiral optical field.
Biography:
Zhenjun Yang, a professor at Hebei Normal University, is
currently the Vice Dean of College of Physics at Hebei Normal University and
the Deputy Director of Hebei Provincial Key Laboratory of Photophysics Research
and Application. He obtained a doctoral degree in optics from South China
Normal University. He has won one second prize (2023) and three third prizes (2025,
2019, 2012) of the Hebei Provincial Natural Science Award, and has been selected multiple times into
the list of the World's Top 2% Scientists. His research focuses on light field
manipulation, spatial optical solitons, optical information transmission and processing, ultrashort
pulses, etc. He has published more than 80 SCI-indexed papers, and multiple
papers have been selected as ESI hot papers and highly cited papers. He has
been invited to give multiple invited presentations at international academic
conferences.