How dose laser plasma works and what is the applicaton for it..

I don't know why you have this in 'other home and garden' but you can access this information on Google by entering 'laser plasma'

Laser propulsion is a form of beam-powered propulsion where the energy source is a remote (usually ground-based) laser system and separate from the reaction mass. This form of propulsion differs from a conventional chemical rocket where both energy and reaction mass come from the solid or liquid propellants carried on board the vehicle.
Does this answer your question? Regards, Tom