Well there are some papers out there about this you can find them yourselves.. a quick explanation of how this works..I'm sure you've heard of multi-photon excitation-absorption right? And absorption spectra of each element you can look up in chem textbooks anyway some papers say that when you give photonic energy in a specific wavelength region e.g. water bonds start to vibrate and reaction rates increase making the molecule unstable and increasing hydrogen production.. that can be also applied to air and fuel that goes into an engine and fits well with gmnt explosion or however meyer called it.. spectra band is in the IR range..