Phosphate glass brings together a long life time of Er3+ higher laser level with productive Electrical power transfer among Yb3+ and Er3+ ions and lessened upconversion losses, So delivering effective Procedure in passively Q-switched diode-pumped and flash-lump pumped lasers Employed in vary-finders. language �?中国 韩国 韩国 韩国 韩国 韩国  https://erybyabcrystal42852.life3dblog.com/33691469/the-best-side-of-er-yb-yab-crystal