Phosphate glass combines a long lifetime of Er3+ upper laser degree with effective energy transfer in between Yb3+ and Er3+ ions and lowered upconversion losses, As a result delivering successful 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://edwinhihda.blogminds.com/er-yb-yab-crystal-for-dummies-30397123