The term transparent as employed herein refers to an optical medium which is transparent or light transmitting with {HEAD ~ respect} to incident {TAIL ~ fundamental light frequencies} and created light frequencies 
to incident
The term transparent as employed herein refers to an optical medium which is transparent or light transmitting with { HEAD ~ respect } to incident { TAIL ~ fundamental light frequencies } and created light frequencies
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH