KTiOAsO4 KTA (Potassium titanyl arsenate) – Laser Crystal – Nonlinear Crystal – Customized Products

Product ID: 6694


$100

KTiOAsO4 (KTA Potassium titanyl arsenate) – Laser Crystal – Nonlinear Crystal – Customized Products

KTiOAsO4 (Potassium Arsenate Titanium Oxide) crystal is an excellent nonlinear material, one of the KTP crystals, compared with KTP, KTA has a larger nonlinear optical coefficient, wider angle and temperature matching bandwidth; can be pumped with Nd: YAG (1064 nm) laser, can achieve non-critical phase matching; has lower electrical conductivity and ionic conductivity than KTP crystal The high thermal conductivity of KTA is suitable for high frequency and high energy mid-infrared output because it does not produce thermal lensing effect during high power laser pumping; the absorption loss of KTA in the spectral range of 3000 nm~5000 nm is much lower than that of KTP crystal. The absorption loss of KTA is much lower than that of KTP crystal in the spectral range from 3000 nm to 5000 nm (solving the absorption peak problem of KTP crystal near 3.4 μm), and has a relatively high resistance to optical damage, which is widely used in optical parametric oscillators (OPO) in the mid-infrared.

Note:
$100 is a deposit, not the final price of the product. Please contact us for price if needed.

FEATURES
High damage threshold
Wide angle and temperature bandwidth
Low dielectric constant and ionic conductivity
3.0-4.0um band has less stable absorption performance
Large nonlinear optical and electro-optical coefficients and high conversion efficiency
The antireflective film from visible light to 3300nm can be plated
Large size crystals can be provided, and the maximum size can reach 10x10x30 mm3 or 5×5×35mm3

Physicochemical Properties

Attribute Numerical
Chemical Formula KTiOAsO4
Crystal Structure Orthorhombic System, Point Groupmm2
Lattice Parameters a=13.125Å, b=6.5716Å, c=10.786Å
Melting Point 1130 ˚C
Mohs Hardness Close to the 5
Density 3.454g/cm3
Coefficient of Thermal Conductivity K1:1.8W/m/K;  K2: 1.9W/m/K;  K3: 2.1W/m/K

 

Nonlinear Optical Properties

NLO (pm/V)Polarization d31= 2.76
d32 = 4.74
d33 = 18.5
d15 = 2.3
d24 = 3.2
Electro-optic Constants (pm/V) (Low Frequency) r33=37.5;
r23=15.4;
r13=11.5
SHG Phase Matching Range 1083-3789nm

 

Linear Optical Properties

Transmission Range 350-5300nm
Absorption Coefficient @ 1064 nm<0.05%/cm
@ 1533 nm<0.05%/cm
@ 3475 nm<5%/cm
Sellmeier Equation Refractive Index A B C D
Ni2=Ai+Biλ2/(λ2-Ci2)-Diλ2 (λ in μm) 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

 

Transmission Range 350-5300nm
Absorption Coefficient @ 1064 nm<0.05%/cm
@ 1533 nm<0.05%/cm
@ 3475 nm<5%/cm
Sellmeier Equation Refractive Index A B C D
Ni2=Ai+Biλ2/(λ2-Ci2)-Diλ2 (λ in μm) 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

 

Spectrum

TaorLab laser crystals