Dual wavelength waveplate inoshandiswa zvakanyanya paTatu Harmonic Generation (THG) system.Paunenge uchida NLO crystal yemhando II SHG (o+e→e), uye NLO crystal yemhando II THG (o+e→e), iyo yakabuda yakaiswa polarization kubva kuSHG haigone kushandiswa kuTHG.Saka iwe unofanirwa kushandura iyo polarization kuti uwane maviri perpendicular polarization yemhando II THG.Dual wavelength waveplate inoshanda senge polarizing rotator, inogona kutenderedza polarization yeimwe danda uye irambe iri imwe danda polarization.