Phosphate glass brings together a protracted lifetime of Er3+ higher laser stage with successful Electrical power transfer in between Yb3+ and Er3+ ions and decreased upconversion losses, As a result furnishing economical operation in passively Q-switched diode-pumped and flash-lump pumped lasers used in range-finders. language �?中国 韩国 韩国 韩国 韩国 https://erybyabcrystal17394.bcbloggers.com/32305052/what-does-er-yb-yab-crystal-mean