Phosphate glass combines an extended life time of Er3+ upper laser degree with successful Electrical power transfer between Yb3+ and Er3+ ions and reduced upconversion losses, thus supplying successful operation in passively Q-switched diode-pumped and flash-lump pumped lasers used in selection-finders. language �?中国 韩国 韩国 韩国 韩国 韩国  We https://cruzhxlxj.blogadvize.com/42402175/the-5-second-trick-for-er-yb-yab-crystal