The use of {HEAD ~ acousto optic devices} for {TAIL ~ spatially splitting beams} in material processing applications is known in the art 
The use of { HEAD ~ acousto optic devices } for { TAIL ~ spatially splitting beams } in material processing applications is known in the art
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH