Can an emitter of green laser pointer control several receivers of wireless presenter laser pointers at the same time?

Its characteristics are: the power density of the laser spot is small, much of the light metal surface reflection, light absorption rate lower weld penetration depth, the welding speed is slow. Mainly used for thin (thickness <1 mm), small parts of the welding process. When the power density on the laser spot is large enough (> 106W/cm2) metal under laser irradiation is rapidly heated, its surface temperature rises to the boiling point in a very short period of time, metal melting or vaporization, resulting in the metal vapor to leave the bath at a certain speed selected steam to produce an additional pressure on the melting liquid metal, the surface of the molten pool of metal sag down under the laser spot to produce a small pit. When the beam to continue heating the bottom of the hole. Can an emitter of green laser pointer  control several receivers of wireless presenter laser pointers at the same time? The energy of the laser beam emitted by  green laser pointer  is not large
Metal vapor produced by the one hand, oppression of the liquid metal of the bottom of the pit of the pits to further deepen the other hand, the steam flying out to the pit outside the molten metal pressed against a molten pool four weeks, this process is continuous and to proceed, then the liquid metal in the formation of an elongated hole. When the beam energy produced by metal vapor recoil pressure of the liquid metal surface tension and gravity balance, the holes are no longer continue to deepen, the formation of a stable depth of hole and welding, so called laser deep penetration. If the laser power is large enough and the material is relatively thin, laser welding of the hole throughout the plate thickness and can receive the back part of the laser, this method can be called to effect welding of sheet metal laser holes. The higher the power of  green laser pointer is, the brighter the laser emitted by the laser pointer will be. The price of this kind of material adopted by green laser pointer  is more expensive.
From a mechanism point of view, these two welding methods are premised on welding existence of holes, no essential difference between the two holes around the molten pool of metal surrounded by gravity and surface tension of the molten metal to make holes to bridge trend, while the continuous generation of metal vapor is trying to maintain the existence of the holes. With the movement of the beam, the holes will be stable with beam movement, but its shape and size. Laser welding characteristics. The salient features of laser welding is the melting of the deep, narrow weld bead, a small heat affected zone and high power density. Focused laser with high power density (105-107W/cm2 or higher), welding of deep penetration manner; due to the small range of laser heating (<1mm), under the conditions of the same power and weld thickness, welding speed, heat input, small heat affected zone and welding stress and deformation is small. What kinds of factors will influence the control range of green laser pointer ?