Neodymium ions (Nd3+) have multiple absorption bands in the 400~900 nm range, and laser output can be achieved through simple xenon or krypton lamp pumping; at the same time, its lower energy level has four radiative transition bands, which theoretically enable 0.9 μm, 1.06 μm, 1.33 μm and 1.8 μm laser output. Among them, the 1.06μm transition is a four-level structure, with a low laser threshold and a large emission cross-section, making the Nd3+ earliest activated ion in achieving laser output at room temperature. Therefore, 1.06 μm laser has been widely studied, and extensive research results have been achieved in silicate, borate, phosphate, germanate, tellurate and other matrices. In 1961, Snitzer et al. [1] achieved laser output by Nd3+-doped silicate glass. After that, the research on Nd3+-doped laser glasses in China was systematically carried out under the leadership of Mr. Gan Fuxi, and in 1962, a 1.06 μm laser output was realized by Nd3+-doped silicate glass. To this day, Chinese Nd3+-doped laser glass has undergone a transition from silicate glass to phosphate glass, and has been applied in high-energy lasers and high-power lasers. The most representative example is the mass application of Nd3+-doped phosphate laser glass for laser fusion devices.