Potaziyamu Titanyle Arsenate (KTiOAsO4), kapena KTA crystal, ndi galasi labwino kwambiri la Optical Parametric Oscillation (OPO).Ili ndi ma coefficients owoneka bwino osapanga mzere komanso ma electro-optical coefficients, amachepetsa kwambiri kuyamwa m'chigawo cha 2.0-5.0 µm, bandwidth yotakata ndi kutentha, ma dielectric constants.