Nonlinear Laser Crystals
A non-linear laser crystal is a type of crystal used in lasers that can generate non-linear optical effects, such as frequency conversion, harmonic generation, and parametric amplification. These crystals have unique properties that allow them to produce multiple wavelengths of light from a single laser source, making them ideal for a variety of applications in science, medicine, and industry.
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Products
| Part Number | NLC-BBO | Part Number | NLC-KTA | Part Number | NLC-KTP | Part Number | NLC-LBO |
| Crystal Structure | Trigonal, Space group R3c | Chemical Formula | KTiOAsO4 (Potassium Titanyl Arsenate) | Chemical Formula | KTiOPO4 (Potassium Titanyl Phosphate) | Chemical Formula | LiB3O5 (Lithium Triborate) |
| Lattice Parameter | a = b = 12.532A°, c = 12.717A°, Z = 6 | Crystal Structure | Orthorhombic, point group mm2 | Crystal Structure | Orthorhombic, space group Pna21, point group mm2 | Crystal Structure | Orthorhombic, Space group Pna21, Point group mm2 |
| Melting Point | About 1095°C | Lattice Parameter | A = 13.125A°, b = 6.5716A°, c = 10.786A° | Lattice Parameter | a = 6.404A°, b = 10.616A°, c = 12.814A°, Z = 8 | Lattice Parameter | a = 8.4473A°, b = 7.3788A°, c = 5.1395A°, Z = 2 |
| Mohs Hardness | 4 | Melting Point | 1130°C | Melting Point | About 1172°C | Melting Point | About 834°C |
| Density | 3.85g/cm3 | Mohs Hardness | Near 5 | Mohs Hardness | 5 | Mohs Hardness | 6 |
| Thermal Conductivity | 1.2W/m/K(⟘c); 1.6W/m/K(//c) | Density | 3.454g/cm3 | Density | 3.01g/cm3 | Density | 2.47g/cm3 |
| Thermal Expansion Coefficients | α11 = 4 x 10-6/K; α33 = 36 x 10-6/K | Thermal Conductivity | K1: 1.8W/m/K; K2: 1.9W/m/K; K3: 2.1W/m/K | Thermal Conductivity | 13W/m/K | Thermal Conductivity | 3.5W/m/K |
Optical and Nonlinear Optical Properties | Transparency Range | 350-5300nm | Thermal Expansion Coefficient | αx = 11 x 10-6/°C, αy = 9 x 10-6/°C, αz = 0.6 x 10-6/°C | Thermal Expansion Coefficients | αx = 10.8 x 10-5/K, αy = -8.8 x 10-5/K, αz = 3.4 x 10-5/K | |
| Transparency Range | 190-3500nm | Absorption Coefficients | @ 1064nm < 0.05%/cm @ 1533nm < 0.05%/cm @ 3475nm < 5%/cm | Transparency Range | 350-4500nm | Transparency Range | 160 – 2600nm |
| SHG Phase Matchable Range | 409.6-3500nm (Type I) 525-3500nm (Type II) | NLO Susceptibilities (pm/V) | d31 = 2.76, d32 = 4.74, d33 = 18.5, d15 = 2.3, d24 = 3.2 | SHG Phase Matchable Range | 497 – 1800nm (Type II) | SHG Phase Matchable Range | 551 – 2600nm (Type I) 790 – 2150nm (Type II) |
| Thermo-optic Coefficient (/°C) | dno/dT = -16.6 x 10-6 dne/dT = -9.3 x 10-6 | Sellmeier Equation Ni2 = Ai + Biλ2/(λ2-Ci2)-Diλ2 | 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 1.22719 0.01436 | Thermo-optic Coefficients (/°C) | dnx/dT = 1.1 x 10-5 dny/dT = 1.3 x 10-5 dnz/dT = 1.6 x 10-5 | Thermo-optic Coefficient (/°C, λ in μm) | dnx/dT = -9.3 x 10-6 dny/dT = -13.6 x 10-6 dnz/dT = (-6.3 – 2.1λ) x 10-6 |
| Absorption Coefficients | < 0.1%/cm at 1064nm <1%/cm at 532nm | Electro-optical Constants (pm/V) (low frequency) | r33 = 37.5; r23 = 15.4; r13 = 11.5 | Absorption Coefficients | < 0.1%/cm at 1064nm < 1%/cm at 532nm | Absorption Coefficients | < 0.1%/cm at 1064nm < 0.3%/cm at 532nm |
| Angle Acceptance | 0.8mrad·cm (θ, Type I, 1064 SHG) 1.27mrad·cm (θ, Type II, 1064 SHG) | SHG Phase Matchable Range | 1083-3789nm | For Type II SHG of a Nd:YAG laser at 1064nm | Temperature Acceptance: 24°C·cm Spectral Acceptance: 0.56nm·cm Angular Acceptance: 14.2mrad·cm (Ø); 55.3mrad·cm (θ) Walk-off Angle: 0.55° | Angle Acceptance | 6.54mrad·cm (Ø, Type I, 1064 SHG) 15.27mrad·cm (θ, Type II, 1064 SHG) |
| Temperature Acceptance | 55°C·cm | NLO Coefficients | deff(II) ≈ (d24 – d15) sin2Ø sin2θ – (d15sin2Ø + d24cos2Ø) sinθ | Spectral Acceptance | 1.0nm·cm (Type I 1064 SHG) 1.3nm·cm (Type II 1064 SHG) | ||
| Spectral Acceptance | 1.1nm·cm | Non-vanished NLO Susceptibilities | d31 = 6.5 pm/V d24 = 7.6 pm/V d32 = 5 pm/V d15 = 6.1 pm/V d33 = 13.7 pm/V | Walk-Off Angle | 0.60° (Type I 1064 SHG) 0.12° (Type II 1064 SHG) | ||
| Walk-off Angle | 2.7° (Type I 1064 SHG) 3.2° (Type II 1064 SHG) | Sellmeier Equations (λ in μm) | nx2 = 3.0065 + 0.03901/(λ2 – 0.04251) – 0.01327λ2 ny2 = 3.0333 + 0.04154/(λ2 – 0.04547) – 0.01408λ2 nz2 = 3.3134 + 0.05694/(λ2 – 0.05658) – 0.01682λ2 | NLO Coefficients | deff(I) = d32cosØ (Type I in XY plane) deff(I) = d31cos2θ + d32sin2θ (Type I in XZ plane) deff(II)= d31cosθ (Type II in YZ plane) deff(II)= d31cos2θ + d32sin2θ (Type II in XZ plane) | ||
| NLO Coefficients | deff(I) = d31sinθ + (d11cos3Ø – d22sin3Ø)cosθ deff(II) = (d11sin3Ø + d22cos3Ø)cos2θ | Electro-optic Coefficients: r13 r23 r33 r51 r42 | Low frequency (pm/V) High frequency (pm/V) 9.5 8.8 15.7 13.8 36.3 35.0 7.3 6.9 9.3 8.8 | Non-vanished NLO Susceptibilities | d31 = 1.05 ± 0.09 pm/V d32 = -0.98 ± 0.09 pm/V d33 = 0.05 ± 0.006 pm/V | ||
| Non-vanished NLO Susceptibilities | d11 = 5.8x d36 (KDP) d31 = 0.05 x d11 d22 < 0.05 x d11 | Dielectric Constant | Ɛeff = 13 | Sellmeier Equations (λ in μm) | nx2 = 2.454140 + 0.011249/(λ2 – 0.011350) – 0.014591λ2 – 6.60 x 10-5λ4 ny2 = 2.539070 + 0.012711/(λ2 – 0.012523) – 0.018540λ2 – 2.00 x 10-4λ4 nz2 = 2.586179 + 0.013099/(λ2 – 0.011893) – 0.017968λ2 – 2.26 x 10-4λ4 | ||
| Sellmeier Equations (λ in μm) | no2 = 2.7359 + 0.01878/(λ2 – 0.01822) – 0.01354λ2 ne2 = 2.3753 + 0.01224/(λ2 – 0.01667) – 0.01516λ2 | ||||||
| Electro-optic Coefficients | γ22 = 2.7 pm/V | ||||||
| Half-wave Voltage | 7KV (at 1064nm, 3 x 3 x 20mm3) | ||||||
| Resistivity | > 1011 ohm·cm | ||||||
| Relative Dielectric Constant | Ɛs11/Ɛ0 : 6.7 Ɛs33/Ɛ0 : 8.1 Tanδ < 0.001 | ||||||