Phosphate glass brings together a protracted life time of Er3+ upper laser level with effective Electricity transfer among Yb3+ and Er3+ ions and lowered upconversion losses, As a result providing effective 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-crystal45840.wssblogs.com/33139498/er-yb-yab-crystal-for-dummies