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