Hand-Operated Laser CUTTING Tool

How about this: a Laser Carpentry/Construction Tool- not just laser guided but laser cutting. It will be an all-in-one hand operated precision cutting tool that can accurately make cuts- it will act just like a hand dremel or similar tool in size and weight (eventually becoming the size/weight of a pencil). It will replace the standard reciprocating saw, the circular saw, the jig saw, rotozip, etc. There could also be a versatile stand that holds the laser but the stand could maintain several positions to replace the standard band saw, table saw, radial arm saw, etc.

There would be the option of selecting the depth of cut (up to 12"), the diameter of the cut (up to 10" for cutting holes- thus the drill press/power drill could be replaced), and the strength of laser for cutting various materials (wood/concrete/tile/metal/etc.)

I am currently doing a renovation to my condo and I have limited space. I am also finding myself always having to change cutting tools - a tool such as this would benefit me greatly.

Questions: Power saws are very dangerous as is but is there a way to improve the safety with lasers? How could you control the depth of a laser? How could it be powered with just a rechargeable battery?

I know there are some laser cutting tools available but the only ones I have seen are large and only table mounted- the hand laser is needed. This could revolutionize the construction industry as it relates to speed, efficiency, precision and effectiveness. It would also be very quiet and allow more building to occur without disturbance.

The next step beyond that could be a molecular separating tool - this would actually physically separate materials at the atomic level. Could this be done without heat?

Is anyone working on this type of a tool? Can someone help develop this? I just think the current state of tools is very primitive with loud spinning dangerous blades - primitive compared to what is happening with computers anyway where components are designed at the nano-level.