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