
- Product Name: Nd:YLF (Er/Tm/Ho etc.)
- Dopant Concentration Tolerance :+/- 0.1%
- Parallelism:< 10 arc seconds
- Perpendicularity:< 5 arc minutes
- Chamfer:0.1mm at 45°
- Clear Aperture:95%
- Scratch and Dig:10/5
- Surface Flatness:λ/10 at 633nm
- Wavefront Distortion:λ/10 at 633nm (< dia7mm) λ/8 at 633nm (≥ dia7mm)
- Damage Threshold:Over 15 J/cm2 TEM00, 10ns, 10Hz
Product overview
Neodymium doped Yttrium Lithium Fluoride (Nd:YLF) is a good performance laser crystal, with low thermal lensing effect and high power. We can offer Nd, Pr, Er, Tm, Ho and no doped YLF crystals performing the specifications upon your request.Scitlion is able to offer
Nd dopand concentration from 0.4% to 1.2% (atm%)
Er dopand concentration from 0.5% to 3% (mol%)
Rod diameter from 1mm to 25.4mm
Length from 1mm to 180mm
Coating upon your request


Nd:YLF Crystal Properties
Optical Properties | |
Peak Stimulated Emission Cross Section | 1.2 x 10-19 cm2 at 1053 nm (E⊥c-axis) 1.81 x 10-19 cm2 at 1047 nm (E∥c-axis) |
Transparency Region | 180 nm to 6.7 μm |
Spontaneous Fluorescence Lifetime | 485 μs for 1% Nd |
Scatter Losses | < 0.2% cm-1 |
Peak Absorption Coefficient (1.2% Nd) | a=3.59 cm-1 at 797 nm (E⊥c-axis) a=10.8 cm-1 at 792 nm (E∥c-axis) |
Physical Properties | |
Chemical Formula | LiY1.0xNdxF4 |
Crystal Structure | Tetragonal |
Lattice Constants | a=5.16A c=10.85A |
Concentration | ~ 1.4 x 1020 /cm3 for 1% Nd doped |
Density | 3.99 g/cm3 |
Melting Point | 819℃ |
Knoop Hardness | 300 Kg/mm2 |
Refractive Index | 1.82 |
Thermal Expansion Coefficient | 8.3 x 10-6 /K, 0-250℃along c-axis 13.3 x 10-6 /K, 0-250℃along c-axis |
Thermal Conductivity | 0.063 W/cm/K |
Specific Heat | 0.79 J/g K |
dn/dT | ||
Wavelength | E⊥c-axis | E∥c-axis |
436 nm | -0.54 x 10-6 /℃ | -2.44 x 10-6 /℃ |
578 nm | -0.91 x 10-6 /℃ | -2.86 x 10-6 /℃ |
1064 nm | -2.00 x 10-6 /℃ | -4.30 x 10-6 /℃ |
Refractive Index | ||
Wavelength | ‘no | ‘ne |
262 nm | 1.485 | 1.51 |
350 nm | 1.473 | 1.49 |
525 nm | 1.456 | 1.479 |
1050 nm | 1.488 | 1.470 |
2065 nm | 1.442 | 1.464 |
Sellmeier Equation | ||
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) |