Phosphate glass combines a long life span of Er3+ upper laser level with effective Electrical power transfer involving Yb3+ and Er3+ ions and diminished upconversion losses, thus 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://roselynej813ged3.oneworldwiki.com/user