Phosphate glass combines a long life time of Er3+ upper laser degree with successful Electrical power transfer between Yb3+ and Er3+ ions and lowered upconversion losses, So giving 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  We https://er-yb-yab-crystal49370.blogadvize.com/40442737/top-latest-five-er-yb-yab-crystal-urban-news