Phosphate glass brings together an extended life span of Er3+ higher laser level with effective energy transfer amongst Yb3+ and Er3+ ions and diminished upconversion losses, As a result providing effective operation in passively Q-switched diode-pumped and flash-lump pumped lasers used in selection-finders. language �?中国 韩国 韩国 韩国 韩国 韩国 https://er-yb-yab-crystal41628.blog2freedom.com/33282254/what-does-er-yb-yab-crystal-mean