为了研究一种新型固-液混合型的流体激光材料作为激光增益介质应用的性能,研究了其散射损耗随折射率及温度的变化规律。搭建了行波放大器实验平台,进行了该新型流体激光材料和钕玻璃固体激光材料的性能对比。实验表明,该流体材料具有典型的激光增益特性,然而其散射损耗对介质折射率和温度的变化比较敏感;在固-液相折射率匹配的条件下,散射损耗小于0.0047 cm-1。实验结果表明,通过对折射率匹配的控制,该流体激光介质可以将散射损耗控制在合理的范围内以实现显著的激光增益,具有向高能激光体系发展的前景。 In order to study the performance of a new type of solid-liquid hybrid fluid laser applied as laser gain medium, the variation of scattering loss with refractive index and temperature was studied. A traveling wave amplifier experimental platform was set up, and the performance comparison between the new type of fluid laser material and neodymium glass solid laser material was carried out. Experiments show that the fluid material has typical laser gain characteristics, however, its scattering loss is sensitive to the change of refractive index and temperature of the medium. The scattering loss is less than 0.0047 cm-1 under the condition of solid-liquid refractive index matching. The experimental results show that the fluid laser medium can control the scattering loss within a reasonable range by controlling the refractive index matching so as to achieve significant laser gain with the prospect of developing a high-energy laser system.