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Potassium Titanyl 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-opti..
Potassium Titanyl 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 .
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Crystal Structure
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Orthorhombic, point group mm2,
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Lattice Parameter
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a=13.125Å, b=6.5716Å, c=10.786Å
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Melting Point
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1130 ˚C
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Mohs Hardness
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near 5
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Density
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3.454g/cm3
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Thermal Conductivity
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K1:1.8W/m/K; K2: 1.9W/m/K; K3: 2.1W/m/K
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Transparency Range
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350-5300nm
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Absorption Coefficients
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@ 1064 nm <0.05 %/cm
@ 1533 nm <0.05 %/cm @ 3475 nm <5%/cm
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NLOSusceptibilities (pm/V)
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d31 = 2.76, d32 = 4.74, d33 = 18.5 , d15 = 2.3, d24 = 3.2
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Sellmeier Equation
N i 2=A i +Bi λ2/(λ2-Ci 2)-Di λ2
(l in mm)
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index
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A
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B
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C
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D
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nx
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1.90713
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1.23522
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0.19692
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0.01025
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ny
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2.15912
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1.00099
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0.21844
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0.01096
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nz
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2.14768
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.29559
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.22719
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0.01436
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Electro-optical Constants (pm/V) (low frequency)
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ｒ33=37.5; ｒ23=15.4; ｒ13=11.5
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SHG Phase Matchable Range
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1083-3789nm
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