Phosphate glass brings together an extended lifetime of Er3+ upper laser level with successful Electricity transfer concerning Yb3+ and Er3+ ions and decreased upconversion losses, So offering productive operation in passively Q-switched diode-pumped and flash-lump pumped lasers Utilized in vary-finders. language �?中国 韩国 韩国 韩国 韩国 韩国  We report https://trumanp912avp8.bloginder.com/profile