Abstract: This work demonstrates mode-locking and Q-switching in a holmium-doped fiber laser (HDFL) using topological insulator (TI) antimony telluride (Sb2Te3) as the saturable absorber (SA). The TI ...
Abstract: A wideband omnidirectional metasurface antenna has been proposed. The characteristic mode analysis (CMA) was applied to explore the modal behaviors of the metasurface and guide the design.