Phosphate glass combines an extended lifetime of Er3+ upper laser amount with effective energy transfer among Yb3+ and Er3+ ions and diminished upconversion losses, Consequently giving successful operation in passively Q-switched diode-pumped and flash-lump pumped lasers used in array-finders. language �?中国 韩国 韩国 韩国 韩国 韩国  We report the https://nicholass135nml7.wikidirective.com/user