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Large KTA Crystal with Super Optical Quality

• High homogeneity, excellent internal quality
• Top quality of surface polishing
• Large block for various size (e.g. 10x10x30mm, 5x5x35mm)
• Large nonlinear coefficient, high conversion efficiency
• Broad transparency range, large temperature matching width
• AR coatings for wave range from visual light to 3300 nm
• Very competitive price, quick delivery

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Product Details

Compared to more commonly used KTP crystal, KTA crystal has larger non-linear optical and electro-optical coefficients. KTA has the added benefit of significantly reduced absorption in the 2 to 5 μm region. It has found more and more applications in second harmonic generation (SHG), sum and difference frequency generation (SFG)/(DFG), optical parametric oscillation/ amplification (OPO/OPA), and electro-optical Q-switching.

WISOPTIC do in-house growing and processing KTA crystal with high optical quality and various options of dimensional and coating specifications.

Features of KTA

Large nonlinear optical coefficients
Wide angular bandwidth and small walk-off angle
Broad temperature and spectral bandwidth
Large electro-optic coefficients
Lower absorption in the 3-4 μm range than KTP.
Nonhydroscopic, chemically and mechanically stable
High thermal conductivity
High damage threshold

WISOPTIC Standard Specifications^* - KTA

Dimension Tolerance	± 0.1 mm
Cutting Angle Tolerance	< ± 0.25°
Flatness	< λ/8 @ 632.8 nm
Surface Quality	< 10/5 [S/D]
Parallelism	< 20”
Perpendicularity	≤ 5'
Chamfer	≤ 0.2mm @ 45°
Transmitted Wavefront Distortion	< λ/8 @ 632.8 nm
Clear Aperture	> 90% central area
Coating	AR@1064nm(R<0.2%) & 1533nm(R<0.5%) & 3475nm(R<9%) or upon request
Laser Damage Threshold	500 MW/cm² for 1064nm, 10ns, 10Hz (AR-coated)
* Products with special requirement upon request.