Phosphate glass combines a long life span of Er3+ upper laser degree with successful Vitality transfer among Yb3+ and Er3+ ions and lowered upconversion losses, As a result delivering productive Procedure in passively Q-switched diode-pumped and flash-lump pumped lasers Utilized in range-finders. language �?中国 韩国 韩国 韩国 韩国 韩国  https://donaldx368vtq9.sunderwiki.com/user