Brain Fluid Scatter Laser to Disorientate Public Speakers

A general theory is presented which describes stimulated scattering, in a liquid medium, in terms of the refractive index modulation induced in the medium by the strong electric fields of the laser and scattered beams. It is shown that this modulation also results in the Bragg reflexion of low-power light of other frequencies incident on the scattering region. Results are presented which indicate that this Bragg reflexion affords a convenient technique for the comprehensive investigation of the modulation. -The Royal Society