Phosphate glass brings together a lengthy lifetime of Er3+ higher laser level with effective Strength transfer involving Yb3+ and Er3+ ions and minimized upconversion losses, Therefore giving economical operation in passively Q-switched diode-pumped and flash-lump pumped lasers Utilized in variety-finders. language �?中国 韩国 韩国 韩国 韩国 韩国 We report https://jamesz570zyw2.wikilowdown.com/user