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KTA - Potassium Titanyl Arsenate (KTiOAsO4)
Introduction
Potassium Titanyl Arsenate (KTiOAsO4 or KTA) 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 conductivity results in higher damage threshold compared with KTP.
CASTECH offers KTA
- Crystal length from 0.1mm to 30 mm and size up to 10 × 10 × 30 mm3
- AR-coating from visible to 3300 nm
- Re-polishing, re-coating service
- Fast delivery (15 working days for polished only, 20 working days for AR-coated)
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Table 1. Chemical and Structural Properties |
|
|
Crystal Structure |
Orthorhombic, Point group mm2 |
|
Lattice Parameter |
a = 13.125 Å, b = 6.5716 Å, c = 10.786 Å |
|
Melting Point |
1130 ℃ |
|
Mohs Hardness |
Near 5 Mohs |
|
Density |
3.454 g/cm3 |
|
Thermal Conductivity |
K1: 1.8 W/m/K; K2: 1.9 W/m/K; K3: 2.1 W/m/K |
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Table 2. Optical and Nonlinear Optical Properties |
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Transparency Range |
350-5300 nm |
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Absorption Coefficients |
<0.05%/cm at 1064 nm <0.05%/cm at 1533 nm <5%/cm at 3475 nm |
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|
NLO Susceptibilities |
d31 = 2.76 pm/V d32 = 4.74 pm/V d33 = 18.5 pm/V d15 = 2.3 pm/V d24 = 3.2 pm/V |
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Sellmeier Equation Ni2=Ai+Bi λ2/(λ2 - Ci2) - Diλ2 (λ in μm) |
index |
A |
B |
C |
D |
|
nx |
1.90713 |
1.23522 |
0.19692 |
0.01025 |
|
|
ny |
2.15912 |
1.00099 |
0.21844 |
0.01096 |
|
|
nz |
2.14768 |
1.29559 |
0.22719 |
0.01436 |
|
|
Electro-optic Constants (low frequency) |
r33 = 37.5 pm/V; r23 = 15.4 pm/V; r13 = 11.5 pm/V |
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|
SHG Phase Matchable Range |
1083-3789 nm |
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Products
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KTA - Potassium Titanyl Arsenate (KTiOAsO4)
- KTA, an excellent NLO crystal for OPO device, features good NLO and E-O coefficients, low absorption in the 2.0-5.0 µm region, broad angular and temperature bandwidth, low dielectric constants, etc.
-
Introduction
Potassium Titanyl Arsenate (KTiOAsO4 or KTA) 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 conductivity results in higher damage threshold compared with KTP.
CASTECH offers KTA
- Crystal length from 0.1mm to 30 mm and size up to 10 × 10 × 30 mm3
- AR-coating from visible to 3300 nm
- Re-polishing, re-coating service
- Fast delivery (15 working days for polished only, 20 working days for AR-coated)
|
Table 1. Chemical and Structural Properties |
|
|
Crystal Structure |
Orthorhombic, Point group mm2 |
|
Lattice Parameter |
a = 13.125 Å, b = 6.5716 Å, c = 10.786 Å |
|
Melting Point |
1130 ℃ |
|
Mohs Hardness |
Near 5 Mohs |
|
Density |
3.454 g/cm3 |
|
Thermal Conductivity |
K1: 1.8 W/m/K; K2: 1.9 W/m/K; K3: 2.1 W/m/K |
|
Table 2. Optical and Nonlinear Optical Properties |
|||||
|
Transparency Range |
350-5300 nm |
||||
|
Absorption Coefficients |
<0.05%/cm at 1064 nm <0.05%/cm at 1533 nm <5%/cm at 3475 nm |
||||
|
NLO Susceptibilities |
d31 = 2.76 pm/V d32 = 4.74 pm/V d33 = 18.5 pm/V d15 = 2.3 pm/V d24 = 3.2 pm/V |
||||
|
Sellmeier Equation Ni2=Ai+Bi λ2/(λ2 - Ci2) - Diλ2 (λ in μm) |
index |
A |
B |
C |
D |
|
nx |
1.90713 |
1.23522 |
0.19692 |
0.01025 |
|
|
ny |
2.15912 |
1.00099 |
0.21844 |
0.01096 |
|
|
nz |
2.14768 |
1.29559 |
0.22719 |
0.01436 |
|
|
Electro-optic Constants (low frequency) |
r33 = 37.5 pm/V; r23 = 15.4 pm/V; r13 = 11.5 pm/V |
||||
|
SHG Phase Matchable Range |
1083-3789 nm |
||||
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KTA_NLO Crystals.pdf
Size:2023-09-28 10:53:47
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