KTA Crystal
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 KTiOAsO threshold compared with KTP.
EBETTER offers KTA
•Crystal length from 0.1mm to 30mm and size up to 10x10x30mm
•AR-coating from visible to 3300nm
•Re-polishing, re-coating service
•Fast delivery(10 working days for polished only, 15 working days for AR-coated)
Basic properties
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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 ℃
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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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Optical and Nonlinear Optical Properties
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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
Ni2=Ai+Biλ2/(λ2-Ci2)-Diλ2
(λ in μm)
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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 |
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 |
2.14768
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1.29559
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0.22719
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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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