Phosphate glass combines a lengthy life time of Er3+ upper laser level with efficient Electrical power transfer among Yb3+ and Er3+ ions and diminished upconversion losses, Therefore giving successful operation in passively Q-switched diode-pumped and flash-lump pumped lasers Utilized in vary-finders. language �?中国 韩国 韩国 韩国 韩国 韩国  We https://jamesr471fji7.wikigop.com/user