LASER DEVICE, IGNITION SYSTEM, AND INTERNAL COMBUSTION ENGINE

A laser device (200) is provided including a surface emitting laser (201) configured to emit light, an optical system (203) disposed in an optical path of light that is emitted from the surface emitting laser (201), a laser resonator (206) which the light passed through the optical system (203) enters, where the optical system (203) includes a first optical element (203a) configured to collimate the light emitted from the surface emitting laser (201), and a second optical element (203b) configured to collect and condense the light collimated by the first optical element (203a).