Hot Sale for Alexandrite Crystal - KTA Crystal – WISOPTIC
Hot Sale for Alexandrite Crystal - KTA Crystal – WISOPTIC Detail:
KTA (Potassium Titanyle Arsenate, KTiOAsO4 ) is a nonlinear optical crystal similar to KTP in which atom P is replaced by As. It has good non-linear optical and electro-optical properties, e.g. significantly reduced absorption in band range of 2.0-5.0 µm, broad angular and temperature bandwidth, low dielectric constants.
Compared with KTP, the main advantages of KTA include: higher second-order nonlinear coefficient, longer IR cut-off wavelength, and less absorption at 3.5 µm. KTA also has lower ionic conductivity than that of KTP, which results in a higher laser induced damage threshold.
KTA is very popularly used for Optical Parametric Oscillation (OPO) application which gives high energy conversion efficiency (above 50%) of tunable laser radiation in solid lasers.
Contact us for the best solution for your application of KTA crystals.
WISOPTIC Advantages - KTA
• High homogeneity, excellent internal quality
• Top quality of surface polishing
• Large block for various size (e.g. 10x10x30mm3, 5x5x35mm3)
• Large nonlinear coefficient, high conversion efficiency
• Broad transparency range, large temperature matching width
• AR coatings for wave range from visual light to 3300 nm
• Very competitive price, quick delivery
WISOPTIC Standard Specifications* - KTA
| Dimension Tolerance | ± 0.1 mm |
| Cutting Angle Tolerance | < ± 0.25° |
| Flatness | < λ/8 @ 632.8 nm |
| Surface Quality | < 10/5 [S/D] |
| Parallelism | < 20” |
| Perpendicularity | ≤ 5′ |
| Chamfer | ≤ 0.2mm @ 45° |
| Transmitted Wavefront Distortion | < λ/8 @ 632.8 nm |
| Clear Aperture | > 90% central area |
| Coating | AR@1064nm(R<0.2%) & 1533nm(R<0.5%) & 3475nm(R<9%) or upon request |
| Laser Damage Threshold | 500 MW/cm2 for 1064nm, 10ns, 10Hz (AR-coated) |
| * Products with special requirement upon request. | |
Main Features - KTA
• High nonlinear coefficient, high electro-optical coefficient
• Wide acceptance angle, small wall-off angle
• Broad transparency range, large temperature matching width
• Small dielectric constant, low ionic conductivity
• Lower absorption in 3-4 µm spectrum range than that of KTP
• High laser damage threshold
Primary Applications – KTA
• OPO for mid IR generation – up to 4 µm
• Sum and Difference Frequency Generation in mid IR range
• Electro-optical modulation and Q-switching
• Frequency doubling (SHG @1083nm-3789nm).
Physical Properties – KTA
| Chemical formula | KTiOAsO4 |
| Crystal structure | Orthorhombic |
| Point group | mm2 |
| Space group | Pna21 |
| Lattice constants | a=13.103 Å, b=6.558 Å, c=10.746 Å |
| Density | 3.454 g/cm3 |
| Melting point | 1130 °C |
| Curie temperature | 881 °C |
| Mohs hardness | 5 |
| Thermal conductivity | k1=1.8 W/(m·K), k2=1.9 W/(m·K), k3=2.1 W/(m·K) |
| Hygroscopicity | non-hygroscopic |
Optical Properties- KTA
| Transparency region (at “0” transmittance level) |
350-5300 nm | ||
| Refractive indices (@632.8 nm) | nx | ny | nz |
| 1.8083 | 1.8142 | 1.9048 | |
| Linear absorption coefficients (@532 nm) |
α = 0.005/cm | ||
|
NLO coefficients (@1064 nm) |
d15=2.3 pm/V, d24=3.64 pm/V, d31=2.5 pm/V, d32=4.2 pm/V, d33=16.2 pm/V |
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Electro-optic coefficients |
r13 |
r23 |
r33 |
| 11.5 ± 1.2 pm/V | 15.4 ± 1.5 pm/V | 37.5 ± 3.8 pm/V | |
Product detail pictures:
Related Product Guide:
Our target should be to consolidate and improve the high-quality and repair of current goods, in the meantime regularly produce new solutions to meet unique customers' needs for Hot Sale for Alexandrite Crystal - KTA Crystal – WISOPTIC, The product will supply to all over the world, such as: Madrid, Bolivia, Israel, We mainly sell in wholesale, with the most popular and easy ways of making payment, which are paying via Money Gram, Western Union, Bank Transfer and Paypal. For any further talk, just feel free to contact our salesmen, who are really good and knowledgeable about our prodcuts.
By Caroline from Porto - 2017.02.18 15:54
The enterprise has a strong capital and competitive power, product is sufficient, reliable, so we have no worries on cooperating with them.
By Daisy from Holland - 2017.10.27 12:12
