Phosphate glass brings together a long lifetime of Er3+ upper laser stage with economical energy transfer among Yb3+ and Er3+ ions and minimized upconversion losses, As a result giving efficient Procedure in passively Q-switched diode-pumped and flash-lump pumped lasers used in variety-finders. language �?中国 韩国 韩国 韩国 韩国 韩国  https://abbab570xwt0.ambien-blog.com/profile