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Phosphate glass combines a long lifetime of Er3+ upper laser degree with effective Vitality transfer among Yb3+ and Er3+ ions and lowered upconversion losses, Hence supplying efficient operation in passively Q-switched diode-pumped and flash-lump pumped lasers Employed in array-finders.language �?中国 韩国 韩国 韩国 韩国 韩国 We pr