Shixiang Xu

TL;DR: In this paper, a cross-shaped photonic crystal waveguide formed by a square lattice Al2O3 rods array is numerically and experimentally investigated, and the measured reflection and transmission characteristics of the photonic crystals show a large band gap between 8.62 and 11.554 GHz (relative bandwidth is 29.34%).

TL;DR: In this article , the authors demonstrate the highest output power of a 1.5 µm band random fiber laser based on the active fiber gain mechanism to the best of their knowledge, using a master oscillator power-amplifier (MOPA) configuration.

TL;DR: In this paper, a spatial phase cross-polarized method for achieving a mode coded modulation of vector light beams (VLBs) was proposed and experimentally demonstrated. And the results showed that a 60 × 60 pixels flower gray image with 14,400 quaternary numbers were then coded to the 16 modes and decoded successfully after 1 m transmission in free space.

TL;DR: The generation and evolution of different pulsed terahertz singular beams with an ultrabroad bandwidth in long gas-plasma filaments induced by a shaped two-color laser field is investigated to deepen the understanding of the THz singular beam generation mechanism and orbital angular momentum (OAM) conversion in laser induced gas-filamentation.

TL;DR: In this paper, a rotary astigmatic diffractive imaging (RADI) system is proposed, which uses a rotatable cylindrical lens for rotary modulation and a camera for collecting the diffractive patterns distorted in different angles.