Phosphate glass combines a long life span of Er3+ upper laser stage with effective Power transfer involving Yb3+ and Er3+ ions and decreased upconversion losses, As a result furnishing efficient Procedure 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://jamesk813jhf4.nico-wiki.com/user