Phosphate glass combines a long lifetime of Er3+ upper laser degree with productive Electrical power transfer in between Yb3+ and Er3+ ions and lowered upconversion losses, As a result delivering successful operation in passively Q-switched diode-pumped and flash-lump pumped lasers used in assortment-finders. language �?中国 韩国 韩国 韩国 韩国 韩国 https://erichi802fed4.nizarblog.com/profile