Nature Communications (Jul 2020)
Ultrashort laser pulse doubling by metal-halide perovskite multiple quantum wells
Abstract
Laser pulse multiplication is desired in many applications but has been challenging to realize by gain medium. Here Guo et al. achieve double-pulsed stimulated emission in quasi-2D metal-halide perovskites due to the two-channel carrier funneling effect in their multiple-quantum-wells structure.