Phosphate glass brings together an extended life span of Er3+ upper laser level with productive Power transfer among Yb3+ and Er3+ ions and decreased upconversion losses, As a result supplying productive operation in passively Q-switched diode-pumped and flash-lump pumped lasers Employed in array-finders. language �?中国 韩国 韩国 韩国 韩国 韩国 https://felixvafux.bloggip.com/34869191/the-ultimate-guide-to-er-yb-yab-crystal