Topological lasers usually emit light from a fixed spot. Here, authors report on an all-solid-state platform where topological lasing is demonstrated at trivial lattice terminations as well as at reconfigurable arbitrary sites. The device consists of a Su-Schrieffer-Heeger waveguide array, printed in a disordered Nd:BaLaGa₃O₇ crystal.
- Bo Wu
- Jinting Ding
- Feng Chen
