Phosphate glass brings together a protracted life span of Er3+ upper laser stage with effective Vitality transfer in between Yb3+ and Er3+ ions and decreased upconversion losses, So providing successful Procedure 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 韩国  https://fredj924mli6.digitollblog.com/32941705/the-greatest-guide-to-er-yb-yab-crystal