  This paper discusses laser-induced flow stabilizing of Rayleigh particle
jets. Laser technology, has important applications in micro/nano-scale static
monomer particle operations, such as optical tweezers, or is used for the
passive measurement of macroscopic physical features of particle groups.
However, it is relatively rare for the laser beam to directly interfere with
the behavior of particle populations dynamically, so as to achieve the purpose
of instant group manipulations. Based on the theoretical analysis of particle
dynamics and hydrodynamic stability theory, the effects of light induced
convergence on rarified jets (as a point source emitting particle off a nozzle)
and denser jets consists of Rayleigh sized particles have been considered. For
rarified particle jet's analysis, compared with the classical vacuum
evaporation deposition theory, we found that the laser positively guided the
movement of particles, leading their pathes into more concentrated targets.
Such convergence effect also happens in the case of denser Rayleigh particle
jets. Particle dynamics simulations and hydrodynamic stability analysis
mutually authenticated that the optical field forces suppress the instability
both of long-wave and short-wave on particle jet interfaces, and have
broad-spectrum stabilization characteristics. Therefor, diffusive particles in
vacuum evaporation can also have very good targeted aggregations by laser.
