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KTA

KTA (Potassium Titanyle Arsenate) is mainly used for Optical Parametric Oscillation (OPO) devices which are reliable, solid state sources of tunable laser radiation with energy conversion efficiency above 50%. While being comparable to KTP in terms of non-linear efficiency and ease of use, the main advantage of KTA material over KTP lies in its significantly reduced absorption in the 3-4 µm range.

Technical Data [KTA]
 
Dimension Tolerance ± 0.1 mm
Angle Tolerance < ± 0.2°
Flatness < λ/8 @ 633 nm
Surface Quality < 10/5 [S/D]
Parallelism < 20”
Perpendicularity ≤ 5'
Chamfer ≤ 0.2mm @ 45°
Chip ≤ 0.1mm
Wavefront Distortion < λ/8 @ 633 nm
Clear Aperture > 90% central area
Coating AR coating: 1064nm (R<0.2%),1533nm (R<0.5%)
Laser Damage Threshold
(AR-coated)
500 MW/cm2 for 1064nm, 10ns,10Hz