Phosphate glass brings together a long lifetime of Er3+ upper laser level with productive Strength transfer involving Yb3+ and Er3+ ions and lessened upconversion losses, thus supplying effective operation in passively Q-switched diode-pumped and flash-lump pumped lasers Utilized in assortment-finders. language �?中国 韩国 韩国 韩国 韩国 韩国  We present https://marcoqtspl.activablog.com/32449716/the-basic-principles-of-er-yb-yab-crystal