From September 27th to October 2nd, 2015, the Providence PD-LD in the United States will exhibit Raman spectroscopy modules with multiple wavelengths. Specifically, there are blue light (405nm&488nm), green light (515nm&520nm), red light (633nm, 637nm&660nm) and near infrared (785nm&1064nm). These modules have the characteristics of narrow line width, stable output power (<0.4%), and can choose whether to have pigtails.
