Phosphate glass combines an extended life time of Er3+ higher laser level with effective energy transfer between Yb3+ and Er3+ ions and diminished upconversion losses, As a result giving economical Procedure in passively Q-switched diode-pumped and flash-lump pumped lasers used in variety-finders. language �?中国 韩国 韩国 韩国 韩国 韩国  https://er-yb-yab-crystal38259.tokka-blog.com/35061962/what-does-er-yb-yab-crystal-mean