Phosphate glass brings together a long lifetime of Er3+ upper laser stage with successful Electrical power transfer in between Yb3+ and Er3+ ions and lowered upconversion losses, As a result giving economical operation 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 https://er-yb-yab-crystal30627.diowebhost.com/88089224/the-basic-principles-of-er-yb-yab-crystal