The process 1 in which the active material has {TAIL ~ composition} within {HEAD ~ ±10 mole percent} of In0.53 Ga0.47 As 
The process 1 in which the active material has { TAIL ~ composition } within { HEAD ~ ±10 mole percent } of In0.53 Ga0.47 As
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH