Phosphate glass brings together a protracted lifetime of Er3+ higher laser stage with productive Strength transfer amongst Yb3+ and Er3+ ions and decreased upconversion losses, As a result supplying economical operation in passively Q-switched diode-pumped and flash-lump pumped lasers Employed in vary-finders. language �?中国 韩国 韩国 韩国 韩国 韩国  https://eduardowwxza.techionblog.com/34826289/the-definitive-guide-to-er-yb-yab-crystal