The Oewaves Ultra narrow linewidth laser module 2um has been developed to offer an ultra-fine line width at 200Hz. Its design is based on the lock with a microresonator in auto-injection of a semiconductor laser in gallery mode “Whispering Gallery mode” (WGM). This new module also integrates low current noise drivers and TEC, Built with a USB interface for control and user-friendly control (RS-232 option). The laser module has long-term frequency stability and ultra-low frequency noise, 1nm thermal tunability is also available via an SMA RF input.