Laser with tilted multi spatial mode resonator tuning element

摘要: An external cavity laser has a mirror-based resonant tunable filter, such as Fabry Perot filter or Gires-Tournois interferometer tuning element, with the being preferably used mirror. A is selected in which spectral response reflection an angular dependence. tilt scheme whereby by selecting appropriate angle between filter's nominal optical axis and axis, narrowband peak provided to cavity. This from lock tune output wavelength.