纳米碳化硅多晶膜构成的无序结构的拉曼受激散射和似激光散射是这种材料的一个新现象。本文讨论了在碳化硅纳米薄膜中出现的拉曼受激散射和随机激光现象 ,提出拉曼受激散射阈值降低的原因在于纳米晶体的散射截面增大 ,而随机激光是由于纳米晶体构成的无序结构因光在其中产生局域化所致。此外 ,本文还报道了荧光辟裂的现象 ,初步认为是纳米无序结构形成的光子禁带产生的作用 Raman-induced scattering and laser-like scattering of disordered structures composed of nanocrystalline silicon carbide polycrystalline films are a new phenomenon in this material. In this paper, we discuss the Raman stimulated and stochastic lasing phenomena in the silicon carbide nanofilms. The reason why Raman stimulated scattering threshold decreases is that the scattering cross section of the nanocrystals increases, while the random lasers are due to the nanocrystals The ordered structure is caused by the localization of light in it. In addition, this article also reported the phenomenon of fluorescence splitting, initially considered to be the role of photon band gap formed by the disordered structure of nano