标题：High efficiency Nd:YAG ceramic eye-safe laser operating at 1442.8 nm
作者：H. N. Zhang;X. H. Chen;Q. P. Wang;X. Y. Zhang;J. Chang;L. Gao;H. B. Shen;Z. H. Cong;Z. J. Liu;X. T. Tao;P. Li
作者机构：[Zhang, H.N] School of Information Science and Engineering, Shandong Provincial Key Laboratory of Laser Technology and Application, Shandong Universit 更多
通讯作者地址：[Li, P]Shandong Univ, Sch Informat Sci & Engn, Jinan 250100, Peoples R China.
摘要：We report on a diode-pumped Nd:YAG ceramic laser operating at 1442.8 nm for the first time. In our experiment, two different Nd:YAG ceramics with the Nd-doped concentrations of 1.0 and 0.6 at. % and a Nd:YAG with the Nd-doped concentration of 1.0 at. % were used as the laser gain mediums, respectively. At a pump power of 20.7 W, a maximum output power of up to 3.96 W with optical-to-optical efficiency of up to 19.1% was obtained by using the 1.0 at. % Nd-doped ceramic as the laser gain medium. To the best of our knowledge, this is the highest output power of a LD-pumped 1.44 μm Nd:YAG ceramic laser and the highest optical-to-optical efficiency of a LD-pumped 1.44 μm Nd-doped crystal laser.