Waveplate mowjadaha dhererka laba-geesoodka ah ayaa si weyn loogu isticmaalaa nidaamka Jiilka Saddexaad ee Harmonic (THG).Markaad u baahato crystal NLO nooca II SHG (o+e →e), iyo NLO crystal nooca II THG (o+e →e), polarization ka soo baxay SHG looma isticmaali karo THG.Markaa waa inaad u rogtaa polarization-ka si aad u hesho laba indhood oo toosan oo ah nooca II THG.Mawjadaha mawjadaha dhererka laba-geesoodka ah waxa uu u shaqeeyaa sida rotator-ka-badalka ah, waxa uu beddeli karaa polarization-ka hal laydh oo waxa uu ahaan karaa kala-soocidda beam kale.