CY0493 Potassium Titanyl Arsenate (KTA)

Catalogue Number	CY0493
Length	0.1-30mm
Dimensions	<151530mm

Kaliumtitanylarsenat (KTiOAsO4), also known as KTA-Crystal, is a non-linear optical crystal used in optically-parametric oscillation (OPO) applications. OPO devices based on KTA serve as solid-state sources for tuneable laser radiation with energy conversion efficiencies above 50%. KTA exhibits a damage threshold that exceeds values measured in similar crystals. It shows lower absorption in the 3–4 µm spectral range than KTP.

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Length	0.1–30mm
Size	<15×15×30mm
AR Coating	Visible up to 3300nm
Service	Post-polishing, post-coating
Delivery	10 working days for polished, 15 working days for AR-coated

Dimensional tolerance:	±0.1mm
Flatness:	λ/8 @ 633nm
Surface quality: Scratches/Grooves	10/5
Parallelism:	better than 30 arcseconds
Perpendicularity:	better than 30 arcminutes
Angular tolerance:	△< 0.5°, △< 0.5°
AR Coating:	AR coatings
Clear aperture:	>90% central area
Transmitted wavefront distortion:	less than λ/8 @ 633nm

Transmission range	350 nm – 5500 nm
Refractive indices: 1064nm 532nm	nx ny nz 1.7818 1.7866 1.8680 1.8264 1.8331 1.9310
Sellmeier equations (l in µm)	nx2 = 1.90713 + 1.23522l2/(l2 – 0.19692) – 0.01025l2 ny2 = 2.15912 + 1.00099l2/(l2 – 0.21844) – 0.01096l2 nz2 = 2.14768 + 1.29559l2/(l2 – 0.22719) – 0.01436l2
Thermo‐optic coefficients	dnx/dT = 1.1×10⁻⁵/°C, dny/dT = 1.3×10⁻⁵/°C dnz/dT = 1.6×10⁻⁵/°C
Absorption coefficient	a < 1% cm⁻¹ at 1064nm and 532nm

Phase-matchable SHG range	542 – 1800nm
Non-linear optical coefficients	d31 = 2.8 pm/V, d32 = 4.2 pm/V, d33 = 16.2 pm/V, d24 = 3.2 pm/V, d15 = 2.3 pm/V
Expressions for effective non-linearity	deff(II) = (d24 – d15) sin²f sin²q – (d15 sin²f + d24 cos²f) sinq
Electro-optic coefficients (low frequency)	r13 = 11.5 pm/V, r23 = 15.4 pm/V, r33 = 37.5 pm/V
Dielectric constant	eeff = 42

Length	0.1-30mm
Size	<151530mm
AR-coating	from visible to 3300 nm
Service	Re-polishing, Re-coating
Delivery	10 working days for polished, 15 working days for AR-coated

CY0493 Potassium Titanyl Arsenate (KTA)

KTA Crystals Specification

KTA Crystals Specifications

KTA Crystal Characteristics:

Properties of KTA Crystals

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