Phosphate glass brings together a protracted life span of Er3+ higher laser amount with successful Electrical power transfer among Yb3+ and Er3+ ions and diminished upconversion losses, So providing effective operation in passively Q-switched diode-pumped and flash-lump pumped lasers used in variety-finders. language �?中国 韩国 韩国 韩国 韩国 韩国  https://trentonfgebx.activosblog.com/32188668/a-secret-weapon-for-er-yb-yab-crystal