Phosphate glass combines a protracted life span of Er3+ higher laser level with productive Electricity transfer between Yb3+ and Er3+ ions and lowered upconversion losses, As a result giving economical Procedure in passively Q-switched diode-pumped and flash-lump pumped lasers Employed in range-finders. language �?中国 韩国 韩国 韩国 韩国 韩国  https://shanz479wwt0.blogunok.com/profile