KTP (Potassium Titanyl Phosphate) Crystals
- High Nonlinear Optical Coefficient: ~15 times that of KDP crystals.
- Broad Transparency Range: 350 nm to 4500 nm.
- High Damage Threshold: >500 MW/cm² for nanosecond pulses.
- Excellent Electro-optic Properties: Suitable for Q-switching and Pockels cells.
- Large Angular Acceptance and Low Walk-off Angle: Easier beam alignment and higher conversion efficiency.
- Stable Physical and Chemical Properties: High mechanical strength and environmental stability.
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Description
Potassium Titanyl Phosphate (KTP) Crystal is a widely used nonlinear optical material with excellent electro-optical, nonlinear optical, and frequency-doubling properties. KTP crystals are extensively applied in second harmonic generation (SHG), optical parametric oscillators (OPO), sum-frequency generation (SFG), and electro-optical modulation. KTP’s high damage threshold, broad transparency range, and large nonlinear coefficient make it ideal for frequency conversion of Nd:YAG lasers and other laser systems operating in the visible and near-infrared regions.
Key Features and Properties:
- High Nonlinear Optical Coefficient: ~15 times that of KDP crystals.
- Broad Transparency Range: 350 nm to 4500 nm.
- High Damage Threshold: >500 MW/cm² for nanosecond pulses.
- Excellent Electro-optic Properties: Suitable for Q-switching and Pockels cells.
- Large Angular Acceptance and Low Walk-off Angle: Easier beam alignment and higher conversion efficiency.
- Stable Physical and Chemical Properties: High mechanical strength and environmental stability.
Typical Applications:
- Second harmonic generation (SHG) of Nd:YAG and Nd:YVO₄ lasers (1064 nm → 532 nm)
- Optical parametric generation (OPG) and optical parametric oscillators (OPO)
- Sum-frequency generation (SFG) and difference-frequency generation (DFG)
- Electro-optic modulators, Pockels cells
- Laser medical systems
- Laser display and laser printing
- Telecommunications and quantum optics research
Specifications:
| Material | Potassium Titanyl Phosphate (KTiOPO₄) |
| Crystal Structure | Orthorhombic |
| Space Group | Pna2₁ |
| Transparency Range | 350 nm – 4500 nm |
| Nonlinear Optical Coefficient d₃₃ | ~16.9 pm/V |
| Electro-optic Coefficient r₃₃ | ~15.7 pm/V |
| Refractive Indices at 1064 nm | nₓ = 1.739, nᵧ = 1.748, n𝓏 = 1.829 |
| Lattice Constants | a = 12.814 Å, b = 6.404 Å, c = 10.616 Å |
| SHG Phase Matching Angle (θ, φ) | Type II: θ = 90°, φ ≈ 23.5° (at 1064 nm) |
| Angular Acceptance (Δθ×l) | ~2.9 mrad·cm |
| Specific Heat Capacity | ~0.64 J/g·K |
| Density | ~3.02 g/cm³ |
| Mohs Hardness | ~5 |
| Typical Crystal Sizes | 2×2×1 mm³, 3×3×5 mm³, 5×5×10 mm³, custom available |
| Surface Finish | 10/5 scratch/dig, λ/8 flatness |
Material Properties and Crystal Structure:
- Chemical Formula: KTiOPO₄
- Crystal Structure: Orthorhombic
- Space Group: Pna2₁
- Lattice Constants: a = 12.814 Å, b = 6.404 Å, c = 10.616 Å
- Transparency Range: 350 nm – 4500 nm
- Nonlinear Optical Coefficient (d₃₃): ~16.9 pm/V
- Refractive Indices (at 1064 nm):
- nₓ = 1.739, nᵧ = 1.748, n𝓏 = 1.829
- Effective Nonlinear Coefficient (deff): ~3.4 pm/V for Type II SHG
- Electro-optic Coefficients (r₃₃): ~15.7 pm/V
Standard Product Sizes and Availability:
- Typical aperture sizes: 2×2 mm² to 10×10 mm²
- Typical lengths: 1 mm to 20 mm
- Standard crystal orientations: X-cut, Y-cut, Z-cut, custom phase-matching angles
- Coatings:
- AR coatings optimized at 1064 nm and 532 nm
- Broadband AR (BBAR) coatings for OPO/OPA applications
- Surface quality: 10/5 scratch/dig (MIL-PRF-13830B)
- Flatness: <λ/8 at 632.8 nm
- Custom sizes, coatings, and phase-matching angles available upon request
Customization Options:
- Custom dimensions, phase-matching angles, and wedge angles
- High damage threshold AR or BBAR coatings
- Brewster angle-cut crystals for low reflection losses
- Composite crystals for high power or special wavelength combinations
- Precision polishing and mounting services available
Packaging and Delivery:
- Packaged in clean, dust-free Class 100 containers
- Protected with anti-static and moisture-proof packaging
- Supplied with quality inspection reports and test certificates
Why Choose Our KTP (Potassium Titanyl Phosphate) Crystals?
- High-quality KTP crystals with optimized growth conditions and superior homogeneity
- Strict quality control ensures low absorption, minimal scattering, and high conversion efficiency
- Advanced polishing and coating techniques to meet high laser damage thresholds
- Tailored solutions for research, industrial, and defense applications
- Responsive customer service and strong technical support team
Ordering & Contact Information:
We offer flexible MOQ (Minimum Order Quantity), competitive pricing and global shipping. For custom orders or technical inquiries, please contact us for a detailed consultation!
