Lasence grows Nd:YLF using Czochralski method with high quality starting materials for crystal growth. We inspect the whole boules with interferometry and their scattering particles with He-Ne laser.
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Nd:YLF Crystal
Lasence grows Nd:YLF using Czochralski method with high quality starting materials for crystal growth. We inspect the whole boules with interferometry and their scattering particles with He-Ne laser.
Product Details:
Lasence grows Nd:YLF crystals using Czochralski method. The use of high quality starting materials for crystal growth, whole boule interferometry, and precise inspection of scattering particle in crystal using He-Ne laser assure that each crystal will perform well.
Lasence's general Nd:YLF production capabilities including
Rod sizes from 2 mm to 10 mm in diameter and from 1 mm to 150 mm in length
Orientation of rod axis to crystal axis <1 degree
Polished only or AR coated rods
Nd dopant concentrations between 0.4 and 1.2 at.%
Large rod and slab dimensions and non-standard dopant concentrations are available upon request
Table 1. Basic Properties
Chemical Formula | LiY1.0-xNdxF4 |
Crystal Structure | Tetragonal |
Space Group | I41/a |
Nd (at/cm3) | 1.40 × 1020 at/cm3 for 1% Nd doping |
Modulus of Elasticity | 85 GPa |
Lattice Parameter | a = 5.16 Å, c = 10.85 Å |
Melting Point | 819℃ |
Mohs Hardness | 4~5 Mohs |
Density | 3.99 g/cm3 |
Thermal Conductivity | 0.063 W/cm/K |
Specific Heat | 0.79 J/g/K |
Thermal Expansion Coefficient | 8.3 × 10-6 /K∥c, 13.3×10-6 /K⊥c |
Table 2. Optical Properties
Transparency Range | 180-6700 nm |
Peak Stimulated Emission Cross Section | 1.8 × 10-19 /cm2 (E∥c) at 1047 nm 1.2 × 10-19 /cm2 (E⊥c) at 1053 nm |
Fluorescence Lifetime | 485 µs for 1% Nd doping |
Scatter Losses | <0.2% /cm |
Peak Absorption Coefficient (for 1.2% Nd) | α = 10.8 cm-1 (792.0 nm E∥c) α = 3.59 cm-1 (797.0 nm E⊥c) |
Laser Wavelength | 1047 nm (∥c, a-cut crystal) 1053 nm (⊥c, a or c-cut crystal) |
Sellmeier Equations (λ in µm): | |
no2 = 1.38757 + 0.70757λ2 / (λ2 - 0.00931) + 0.18849λ2 / (λ2 - 50.99741) ne2 = 1.31021 + 0.84903λ2 / (λ2 - 0.00876) + 0.53607λ2 / (λ2 - 134.9566)
| |
Table 3. Index of Refraction
Wavelength (nm) | no | ne |
262 | 1.485 | 1.511 |
350 | 1.473 | 1.491 |
525 | 1.456 | 1.479 |
1050 | 1.448 | 1.47 |
2065 | 1.442 | 1.464 |
Table 4. dn / dT
Wavelength (nm) | E // c | E ⊥ c |
436 | -2.44 × 10-6/℃ | -0.54 × 10-6/℃ |
578 | -2.86 × 10-6/℃ | -0.91 × 10-6/℃ |
1060 | -4.30 × 10-6/℃ | -2.00 × 10-6/℃ |
Specifications of Nd:YLF crystal from Lasence
Table 5. Specifications
Standard Dopant Concentration | Nd: 1.1 ± 0.1% |
Surface quality (scratch/dig) | 10/5 to MIL-PRF-13830B |
Wavefront Distortion | ≦λ/4 @633 nm |
Surface Flatness | λ/8 @633 nm |
Parallelism | 20 arc sec |
Perpendicularity | ≦15 arc min |
Chamfer | ≦0.2 mm × 45° |
End Coating | R<0.15% @1047/1053 nm |
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Address: No.18-B Xianshan East Rd, Qingdao 266107, China
E-mail: sales@lasence.com
Tel: +86 532 66731598
Fax: +86 532 66731599
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