a plurality of laser diode pumping sources positioned adjacent to {HEAD ~ both} of {TAIL ~ the opposed sides} of and substantially aligned with the vertices of said zig zag optical path, 
of
a plurality of laser diode pumping sources positioned adjacent to { HEAD ~ both } of { TAIL ~ the opposed sides } of and substantially aligned with the vertices of said zig zag optical path ,
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH