Phosphate glass brings together a lengthy life time of Er3+ upper laser amount with effective Electrical power transfer concerning Yb3+ and Er3+ ions and minimized upconversion losses, thus providing efficient Procedure in passively Q-switched diode-pumped and flash-lump pumped lasers Employed in range-finders. language �?中国 韩国 韩国 韩国 韩国 韩国  https://christe691bzv0.wikinstructions.com/user