Dual wavelength waveplate yog dav siv nyob rau hauv Third Harmonic Generation (THG) system.Thaum koj xav tau NLO siv lead ua rau hom II SHG (o + e → e), thiab NLO siv lead ua rau hom II THG (o + e → e), tso tawm polarization los ntawm SHG tsis tuaj yeem siv rau THG.Yog li koj yuav tsum tig lub polarization kom tau txais ob qhov perpendicular polarization rau hom II THG.Dual wavelength waveplate ua hauj lwm zoo li lub polarizing rotator, nws muaj peev xwm tig lub polarization ntawm ib tug beam thiab nyob twj ywm lwm beam polarization.