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KTA Crystal

Potassium Titanyle Arsenate (KTiOAsO4), or KTA crystal, is an excellent nonlinear optical crystal for Optical Parametric Oscillation (OPO) application. It has better non-linear optical and electro-optical coefficients, significantly reduced absorption in the 2.0-5.0 µm region, broad angular and temperature bandwidth, low dielectric constants. And its low ionic conductivities result in higher damage threshold compared with KTP

Applications and Advantages:
◇An excellent NLO crystal developed mainly for Optical Parametric Oscillation (OPO).
◇Large non linear coefficients,broad angular and temperature bandwith.
◇Low dielectric constants, low ionic conductivities.
◇Lower absorption in the 3-4µm spectrum range than KTP.
◇Resistant to high intensity laser radiation.
◇Frequency doubling (SHG @1083nm-3789nm).
◇Sum and Difference Frequency Generation (SFG)/(DFG).
◇Electro-Optical Q-switch and modulation.


INNOWIT's specifications of KTA :

Dimension tolerance:



λ/8 @633nm

Surface quality: Scratch/Dig

10/5 (MIL-PRF-13830B)


better than 20 arc sec.


better than 15 arc min

Angle tolerance:

<± 0.2°

AR coating:

AR coating

Clear aperture:

>90% central area

Transmitting wavefront distortion:less than λ/8 @ 633nm

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