Phosphate glass brings together a protracted lifetime of Er3+ upper laser stage with effective Electrical power transfer in between Yb3+ and Er3+ ions and decreased upconversion losses, thus supplying productive operation in passively Q-switched diode-pumped and flash-lump pumped lasers Utilized in vary-finders. language �?中国 韩国 韩国 韩国 韩国 韩国  https://er-yb-yab-crystal63951.sharebyblog.com/32988995/5-simple-statements-about-er-yb-yab-crystal-explained