Mode-locked laser device, ultrashort pulse light source device, broad bandwidth light source device, non-linear optical microscopy device, recording device and optical coherence tomography device

摘要

There is provided a mode-locked laser device (10) including: a resonator (34); a solid-state laser medium (26) that is disposed in the resonator (34) and outputs oscillation light in accordance with the incidence of excitation light; a saturable absorber (28) that is disposed in the resonator (34) and induces soliton mode-locking; a group velocity dispersion correction component (30) that is disposed in the resonator (34) and controls group velocity dispersion in the resonator (34); and an excitation portion (32) that causes excitation light to be incident at the solid-state laser medium (26), wherein a resonator length of the resonator is at least a resonator length with which soliton mode-locking is inducible and is less than a resonator length with which non-soliton mode-locking is inducible.