Potassium Titanyle Arsenate (KTiOAsO4), ko KTA crystal, kyakkyawan lu'ulu'u ne na gani mara kyau don aikace-aikacen Oscillation na gani na gani (OPO).Yana da mafi kyawun hanyoyin gani marasa layi da na gani na lantarki, rage yawan sha a cikin yanki na 2.0-5.0 µm, faffadan angular da yanayin zafi, ƙananan madaidaicin dielectric.