建立了磷酸盐钕玻璃板条一级振荡二级放大系统。将新型Ｃｒ４＋ＹＡＧ晶体用于激光介质为磷酸盐钕玻璃的振荡级中实现被动调Ｑ激光输出。经过两级放大后得到近衍射极限（Ｍ２ｘ＝Ｍ２ｙ＝１．５）的激光输出，能量放大率为１０．１ The first stage oscillating phosphate glass neodymium glass slab amplification system was established. The new Cr4 + YAG crystal is used as the laser medium to realize the passive Q-switched laser output in the oscillation stage of the neodymium phosphate glass. After two stages of amplification to obtain nearly diffraction limit (M2x ​​= M2y = 1.5) laser output, the power amplification rate of 10.1