Faculty of Material Science and Engineering, Kunming University of Science and Technology, 253 Xuefu RD, Kunming 650093, China.
Opt Lett. 2011 Aug 15;36(16):3091-3. doi: 10.1364/OL.36.003091.
Photoreduction of samarium-doped BaCl(2)-modified aluminofluoride glass by femtosecond laser irradiation and x-ray irradiation were investigated. Photoluminescence of samarium ions indicated that photoreduction of Sm(3+)→Sm(2+) efficiently occurred in glass samples containing more than 5 mol.% BaCl(2) after femtosecond laser irradiation, while dramatic change was not observed by x-ray irradiation. Transmission electron microscope results revealed that BaCl(2) nanophases only precipitated from glass matrix with a high BaCl(2) content by focusing femtosecond laser irradiation. Samarium ions were selectively incorporated into the precipitated nanophases, resulting in the enhancement of Sm(3+) photoreduction under lower laser power.
采用飞秒激光辐照和 X 射线辐照研究了掺钐的 BaCl2 修饰的氟铝酸盐玻璃的光还原。 钐离子的光致发光表明，在含有超过 5 mol% BaCl2 的玻璃样品中，飞秒激光辐照后 Sm(3+)→Sm(2+)的光还原有效地发生，而 X 射线辐照则没有观察到明显的变化。 透射电子显微镜结果表明，只有在高 BaCl2 含量的玻璃基质中，通过聚焦飞秒激光辐照才能从玻璃基质中析出 BaCl2 纳米相。 钐离子选择性地掺入沉淀的纳米相中，从而在较低的激光功率下增强了 Sm(3+)的光还原。
