It is particularly directed to {HEAD ~ photodectors} formed in InGaAs films grown on substrates containing {TAIL ~ InP} 
It is particularly directed to { HEAD ~ photodectors } formed in InGaAs films grown on substrates containing { TAIL ~ InP }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL