The method 13, wherein calculating {TAIL ~ destructive interference conditions} comprises calculating {HEAD ~ scalar products} of electrical field vectors of the two s polarized waves and of the two p polarized waves 
The method 13 , wherein calculating { TAIL ~ destructive interference conditions } comprises calculating { HEAD ~ scalar products } of electrical field vectors of the two s polarized waves and of the two p polarized waves
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH