High power laser bean can give rise to nonlinear change in the distribution ofacoustic wave field and excite scattering Brillouin scattering (SBS) in water. At present,the uniform grating theory is used to analyze the spectral distribution of stimulatedBrillouin scattering, which is inconsistent with the experiment. In this paper, three kindsof refractive index distribution model for reflection spectra were simulated by using themethod of multilayer dielectric film, and the changes of the reflection spectra of differentrefractive index distribution models were analyzed.
展开▼
