System Comprising a Low Phase Noise Waveguide Laser, a Method of Its Manufacturing and Its Use

The invention relates to a system comprising a waveguide laser for exciting laser light at a lasing wavelength lambdas and a pump for pumping the waveguide laser at a pumping wavelength lambdap. The invention further relates to a method of providing such a system and its use. The object of the present invention is to provide a system comprising a waveguide laser with a reduced phase noise. The problem is solved in that the pump is a single frequency laser. The invention may e.g. be used in systems where an ultra-low phase noise and/or linewidth is required, e.g. in LIDAR or interferometric systems.