Phosphate glass combines a long lifetime of Er3+ upper laser degree with successful energy transfer in between Yb3+ and Er3+ ions and lowered upconversion losses, thus delivering successful operation in passively Q-switched diode-pumped and flash-lump pumped lasers used in vary-finders. language �?中国 韩国 韩国 韩国 韩国 韩国  We existing https://becketteffcz.myparisblog.com/33659421/the-ultimate-guide-to-er-yb-yab-crystal