Phosphate glass brings together a protracted life time of Er3+ higher laser level with economical Electrical power transfer among Yb3+ and Er3+ ions and reduced upconversion losses, Therefore giving productive 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://erybyabcrystal07284.answerblogs.com/33340015/details-fiction-and-er-yb-yab-crystal