Erbium, Chromium and Ytterbium co-doped phosphate glass has a wide range of applications due to its excellent properties. It is the best glass material for 1535nm laser, which has better ability of transmission in the atmosphere but is safe for eyes of human. It is suitable for applications for ranging, medical treatment, scientific research and other purposes. ●Wavelength of laser: 1535nm ●Concentrations: 0.13cm³~0.25cm³ ●Cross section for stimulated emission (10 -20 cm 2 ):0.8 ●Fluorescent lifetime (ms):8.3-8.6 depending on doping level