3 papers
physics.optics2026
Flat-top solitons and anomalous interactions in media with even-order dispersions and competing nonlinearities
Xueqing He, Shijie Hao, Lijing Xing +3
Flat-top (FT) solitons are optical pulses that arise from the balance of dispersion and self-phase modulation in media with the competing cubic-quintic nonlinearity. Previously, FT…
physics.optics2025
Transformation of topological optical states via spiral modulation in fractional-diffraction systems
Dongdong Wang, Xueqing He, Rujiang Li +3
We propose a scheme for manipulations of a variety of topological states in fractional optical systems through spiral modulation of the local refraction index. An analytical approx…
physics.optics2025
Effects of fractional diffraction on nonlinear PT phase transitions and stability of dark solitons and vortices
Xueqing He, Mingming Zhang, Pengfei Li +2
The wave propagation under the action of fractional diffraction has recently drawn increasing attention in nonlinear optics. Here, we address the effect of fractional diffraction o…