Ji Eun Bae, Xavier Mateos, Magdalena Aguiló, Francesc Díaz, Javier García Ajates, Carolina Romero, Javier Rodríguez Vázquez de Aldana, Fabian Rotermund. Multi-gigahertz mode-locked femtosecond Yb:KLuW waveguide lasers[J]. Photonics Research, 2022, 10(11): 2584