采用提拉法生长了掺Nd3+量为1.2%(摩尔分数)的Nd3+:Y3Al5O12(Nd:YAG)激光晶体。测定了Nd:YAG晶体室温下300～3000nm的吸收光谱和808nm激光激发的荧光光谱,核定了Stark能级的位置。结果表明:Nd:YAG晶体产生的1.3μm波长激光适用于光通讯,并具有人眼安全,对大气吸收低等特点,可用于激光雷达和和外科手术。4F3/2→4I9/2跃迁的946nm激光,倍频后产生的473nm蓝色激光,在激光存储和光显示方面有重要应用。4F3/2→4I11/2跃迁的1122nm激光倍频后可产生561nm黄色激光,可用作生物显微镜光源。 The Nd3 +: Y3Al5O12 (Nd: YAG) laser crystal with Nd3 + content of 1.2% (molar fraction) was grown by Czochralski method. The absorption spectra of Nd: YAG crystal at room temperature of 300 ~ 3000 nm and the excitation spectrum of 808 nm laser were measured, and the position of Stark level was determined. The results show that Nd: YAG crystal with 1.3μm wavelength laser is suitable for optical communication and has the advantages of human eye safety and low atmospheric absorption. It can be used in laser radar and surgery. 4F3 / 2 → 4I9 / 2 transition of the 946nm laser, frequency doubling generated 473nm blue laser, laser storage and light display has important applications. The 4F3 / 2 → 4I11 / 2 transition produces a 561 nm yellow laser after its 1122 nm laser frequency doubling, which can be used as a bio-microscope light source.