采用Nd∶YAG与Nd∶YVO4晶体组合应用的方案,将具有优良导热和光电性能的Nd∶YAG晶体作为抽运光的前端吸收晶体，其后端放置具有较宽吸收谱的Nd∶YVO4晶体，用来吸收由于谱宽不匹配而没有被Nd∶YAG晶体吸收的抽运光能量成分。两种晶体在波长1064 nm处的发射谱相互重叠，其吸收的抽运光能量可以转化成共同波长的振荡激光，提高了抽运光的利用效率。这种组合应用的方式还可以有效抑制振荡光功率随抽运源工作温度变化而产生的波动。实验证明，采用这种激光晶体的组合应用方案，相对于单一Nd∶YAG晶体方案，激光器的光光转换效率可提升22.9%，输出功率对温度的敏感度由7%降到1%以内。

The scheme of Nd∶YAG and Nd∶YVO4 crystal composite application is proposed. The Nd∶YAG crystal with good thermal conductivity and optical properties is used as the front end of pump light absorption crystal, and placing a wider absorption spectrum Nd∶YVO4 crystal at its rear-end to absorb the pumping light energy composition, which is not absorbed by Nd∶YAG crystal due to the spectral width does not match. Two kinds of crystals in the 1064 nm wavelength emission spectrum overlap each other. The absorption of pump light energy can be converted to common oscillation laser wavelength, the efficiency of pumping light is improved. The proposed composite applications can effectively reduce the oscillating light power changing with pumping source working temperature fluctuations. Experimental results show that the proposed composite application scheme improves the optical-to-optical efficiency of pump sources by 22.9%, and the sensitivity of output power affected by temperature is reduced from 7% to 1%, comparing with the single Nd∶YAG crystal scheme.