Phosphate glass brings together an extended life span of Er3+ upper laser degree with effective Vitality transfer involving Yb3+ and Er3+ ions and lessened upconversion losses, Therefore furnishing successful operation in passively Q-switched diode-pumped and flash-lump pumped lasers used in selection-finders. language �?中国 韩国 韩国 韩国 韩国 韩国  We https://harryp146onn7.governor-wiki.com/user