Phosphate glass combines an extended life time of Er3+ upper laser amount with productive Electrical power transfer in between Yb3+ and Er3+ ions and lowered upconversion losses, Hence offering productive operation in passively Q-switched diode-pumped and flash-lump pumped lasers used in range-finders. language �?中国 韩国 韩国 韩国 韩国 韩国  https://er-yb-yab-crystal52951.bloguerosa.com/32321436/er-yb-yab-crystal-an-overview