Phosphate glass brings together an extended lifetime of Er3+ higher laser level with successful Strength transfer among Yb3+ and Er3+ ions and reduced upconversion losses, As a result supplying productive operation in passively Q-switched diode-pumped and flash-lump pumped lasers Utilized in selection-finders. language �?中国 韩国 韩国 韩国 韩国 韩国  https://zionllidb.blogsvila.com/34944831/considerations-to-know-about-er-yb-yab-crystal