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               KTA Crystal  (Potassium Titanyle Arsenate )

 

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 .

Advantages:

• 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 and high transmission in the 3-4 µm spectrum range than KTP.

• Highly resistant to high intensity laser radiation

 

KTA's Applications 

• An excellent NLO crystal developed mainly for Optical Parametric Oscillation (OPO)

• Frequency Doubling (SHG @1083nm-3789nm) 

• Sum and Difference Frequency Generation (SFG)/(DFG)

• NCPM cut 1064--->1533+3475 (type I Theta=90deg., phi=0deg.)

 

HGO offer KTA specification:

Tolerance of cutting angle

△θ≤±0.25°,△φ≤±0.25°

Tolerance of dimension

Dimension+/-0.1 mm,L:±0.1mm

Flatness

λ/8 @ 632.8nm

Wavefront distortion

λ/8@ 632.8nm

Surface quality

10/5  per MIL-O-13830A

Parallelism

10″

Perpendicularity

5′

Bevel/chamfer

<0.1mm@45deg.

Chips

<0.1mm

CA

>95%

Coating

AR/HR coating Upon customer’s request

Damage Threshold

  750MW/CM2 at 1064nm, TEM00, 10ns, 10Hz

Warranty

        One year under proper use