The semiconductor structure includes a compound semiconductor substrate and {TAIL ~ a high efficiency photonic device} is produced after {HEAD ~ the compound semiconductor substrate} is removed 
The semiconductor structure includes a compound semiconductor substrate and { TAIL ~ a high efficiency photonic device } is produced after { HEAD ~ the compound semiconductor substrate } is removed
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH