Phosphate glass brings together a long life span of Er3+ upper laser stage with productive Electrical power transfer involving Yb3+ and Er3+ ions and diminished upconversion losses, thus delivering economical operation in passively Q-switched diode-pumped and flash-lump pumped lasers Utilized in array-finders. language �?中国 韩国 韩国 韩国 韩国 韩国  https://er-yb-yab-crystal53940.uzblog.net/5-simple-statements-about-er-yb-yab-crystal-explained-46932206