Method for producing {HEAD ~ an optical semiconductor device} having a carrier injection path or {TAIL ~ an electric field applying path} 
having
Method for producing { HEAD ~ an optical semiconductor device } having a carrier injection path or { TAIL ~ an electric field applying path }
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL