Potassium Titanyle Arsenate (KTiOAsO4, or KTA) crystal is an excellent nonlinear optical crystal for Optical Parametric Oscillation (OPO) Application. OPO devices based on KTAs are reliable, solid state, tunable laser radiation exhibiting energy conversion efficiencies above 50%. In addition, KTA has a very high damage threshold.
Large nonlinear optical and electro-optical coefficients
Wide angular bandwidth and small walk-off angle
Broad temperature and spectral bandwidth
Low dielectric constants, loss tangent and ionic conductivities (much less than that of KTP)
High damage threshold
Lower absorption in the 3-4 µm spectrum range than KTP
Highly resistant to high intensity laser radiation.