Phosphate glass brings together an extended lifetime of Er3+ upper laser amount with productive Vitality transfer between Yb3+ and Er3+ ions and lowered upconversion losses, As a result delivering efficient operation 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://zanelmmjf.mdkblog.com/38932182/not-known-factual-statements-about-er-yb-yab-crystal