a plunger body having a port between said laser diode and said receptor, wherein {HEAD ~ said port} is aligned with {TAIL ~ said laser beam} 
is aligned with
a plunger body having a port between said laser diode and said receptor , wherein { HEAD ~ said port } is aligned with { TAIL ~ said laser beam }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL