would it be possible to make this effect more real using a pair of lasers which merge in a prism, and use constructive and destructive interference with multiple light frequencies to generate a 'static beam' in space by generating the Fourier Transform of that static beam, in space, using multiple frequencies of light?,(reply>), This sounds like some of the effects described by people explaining why lightsabers aren't a thousand meters long.,(reply>), forgive my unclear language, my knowledge is primarily audio and audio-related DSP