A terahertz(THz) waveguide using a metallic nanoslit whose width is much smaller than the skin depth is analytically investigated. By taking some important phys
In recent years, topological insulators have aroused the attention of a great number of scientists due to their unique electronic structures and peculiar physic
We present the recent research progresses of our group on mid-infrared pulsed fiber lasers at 3 μm by passive switching. Three different kinds of saturable abs