Potassium Titanyl Phosphate – KTP Crystals
KTP (Potassium titanyl phosphate) is a nonlinear crystal mostly used in extracavity configuration when a single pass through the crystal is required. KTP crystals are optimized for SHG intracavity configuration in low… Read more →
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| SKU | L, mm · W, mm · H, mm · Group · φ · Coating · θ | |
|---|---|---|
| HGTR-0612-05 | 6.7·3.5·3.5·25·AR/AR@1064+532 nm·90 |
Out of stock
Ships in: 62–65 calendar days
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|
| KTP-1030-01 | 8·10·10·23.5·AR/AR@1064+532 nm·90 |
Out of stock
Ships in: 62–65 calendar days
$623
|
| KTP-1030-02 | 9·4.5·4.5·Non Standard Crystals - SHG @ 1064 nm, Type 2 Application·23.5·AR/AR@1064+532 nm·90 |
Out of stock
Ships in: 62–65 calendar days
$620
|
| KTP-401 | 5·3·3·SHG @ 1064 nm, Type 2 Application·23.5·AR/AR@1064+532 nm·90 |
Out of stock
Ships in: 62–65 calendar days
$130
|
| KTP-402 | 10·3·3·SHG @ 1064 nm, Type 2 Application·23.5·AR/AR@1064+532 nm·90 |
Out of stock
Ships in: 62–65 calendar days
$193
|
| KTP-405 | 20·5·5·X-cut for eye safe generation by OPO @ 1064 nm -> 1570 nm + 3300 nm·AR/AR@1064+1570+3300 nm·90 |
1 in stock
Ships in: 2–5 calendar days
$955
|
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Specifications
NONLINEAR PROPERTIES
| Phase matching range for: | Phase matching range for: |
| Type 2 SHG in x-y plane | 0.99÷1.08 μm |
| Type 2 SHG in x-z plane | 1.1÷3.4 μm |
| Type 2, SHG@1064 nm, cut angle θ=90°, φ=23.5° | Type 2, SHG@1064 nm, cut angle θ=90°, φ=23.5° |
| Walk-off | 4 mrad |
| Angular acceptances | Δθ = 55 mrad * cm / Δφ = 10 mrad * cm |
| Thermal acceptance | ΔT = 22 K * cm |
| Spectral acceptance | Δν = 0.56 nm * cm |
| Up to 80% extracavity SHG efficiency | |
| Effective nonlinearity | |
| x-y plane | deoe = doee = d₁₅sin²φ + d₂₄cos²φ |
| x-z plane | doeo = deoo = d₂₄sinθ |
| d₃₁= ± 1.95 pm / V d₃₂=± 3.9 pm / V | |
| d₃₃= ± 15.3 pm / V d₂₄= d₃₂d₁₅= d₃₁ | |
| Damage threshold | >500 MW / cm² / for pulses λ=1064 nm, τ=10 ns, 10 Hz, TEM₀₀ |
PHYSICAL PROPERTIES
| Crystal structure | orthorhombic |
| Point group | mm2 |
| Space group | Pna2₁ |
| Lattice constants, Å | a = 6.404, b = 10.616, c = 12.814, z = 8 |
| Density, g / cm³ | 3.01 |
| Melting point, °C | 1172 |
| Transition temperature, °C | 936 |
| Mohs hardness | 5 |
| Thermal expansion coefficients, °C⁻¹ | ax = 11×10⁻⁶, ay = 9×10⁻⁶, az = 0.6×10⁻⁶ |
| Thermal conductivity, W / m*K | 13 |
| Not hygroscopic |
OPTICAL PROPERTIES
| Transparency | 350–4400 nm | 350–4400 nm |
|---|---|---|
| Refractive indices | at 1064 nm | at 532 nm |
| nx = 1.7404 | nx = 1.7797 | |
| ny = 1.7479 | ny = 1.7897 | |
| nz = 1.8296 | nz = 1.8877 | |
| Thermooptic coefficients in 0.4 – 1.0 μm range | ∂nx / ∂T = 1.1×10⁻⁵ (K)⁻¹ | ∂nx / ∂T = 1.1×10⁻⁵ (K)⁻¹ |
| ∂ny / ∂T = 1.3×10⁻⁵ (K)⁻¹ | ∂ny / ∂T = 1.3×10⁻⁵ (K)⁻¹ | |
| ∂nz / ∂T = 1.6×10⁻⁵ (K)⁻¹ | ∂nz / ∂T = 1.6×10⁻⁵ (K)⁻¹ | |
| Wavelength dispersion of refractive indices | nx²=3.0067+0.0395 / (λ²-0.04251)-0.01247*λ² | nx²=3.0067+0.0395 / (λ²-0.04251)-0.01247*λ² |
| ny²=3.0319+0.04152 / (λ²-0.04586)-0.01337*λ² | ny²=3.0319+0.04152 / (λ²-0.04586)-0.01337*λ² | |
| nz² =3.3134+0.05694 / (λ²-0.05941)-0.016713*λ² | nz² =3.3134+0.05694 / (λ²-0.05941)-0.016713*λ² |
STANDARD SPECIFICATIONS
| Flatness | λ / 8 @ 633 nm |
| Parallelism | < 20 arcsec |
| Perpendicularity | < 5 arcmin |
| Angle tolerance | < 30 arcmin |
| Aperture tolerance | ± 0.1 mm |
| Surface quality | 10 / 5 scratch & dig per MIL-O-13830A |
| Clear aperture | 90% of full aperture |
Description
KTP (Potassium titanyl phosphate) is a nonlinear crystal mostly used in extracavity configuration when a single pass through the crystal is required.
KTP crystals are optimized for SHG intracavity configuration in low peak power CW lasers. Due to the large number of passes through the crystal, low insertion losses and high homogeneity are essential for conversion efficiency. We select the highest quality material by SHG efficiency mapping of each crystal. Fine surface polishing and dual band AR coatings with very low losses allow Eksma Optics to produce KTP crystals suitable for intracavity SHG application.
