Nd:YLF

Optical Properties

Transparency Range:

 180-6700nm

Peak Stimulated Emission Cross Section:

1.8×10-19cm2 (E||C) @ 1064nm
1.2×10-19cm2 (EperpC) @ 1064nm

Spontaneous Fluorescence Lifetime:

 485 µs for 1% Nd doping
Seatter Losses: < 0.2% per cm
Peak Absorption Coefficient (for 1.2% Nd): a = 10.8cm-1 (792.0nm E||C)
a = 3.59cm-1 (792.0nm EperpC)
Laser Wavelength: 1047nm (||c, a-cut crystal)
1053nm (perpc, a-cut crystal)

 

 

Physical

Chemical Formula:

 LiY1.0-xNdxF4

Space Group:

 141/a

Nd atoms/m3:

1.4×1020 atoms/cm3 for 1% Nd doping
Modulus of Elasticity: 85GPa
Crystal Structure: Tetragonal
Cell Parameters: a = 5.16A , c = 10.85A
Melting Point: 819°C
Mohs Hardness: 4 – 5
Density: 3.99g/cm3
Thermal Conductivity: 0.063W/m /K
Specific Heat: 0.79J/gK
Thermal Conductivity: 8.3×10-6/K||C
13.3×10-6/KperpC

 

 

Index of Refraction

Wavelength
na
nc

262nm
1.485
1.511

350nm
1.473
1.491
525nm
1.456
1.479
1050nm
1.448
1.470
2065nm
1.442
1.464

 

 

dn/dT

Wavelength
E||C
EperpC

436nm
-2.44×10-6/°C
-0.54×10-6/°C

578nm
-2.86×10-6/°C
-0.91×10-6/°C
1060nm
-4.30×10-6/°C
-2.00×10-6/°C

 

 

The Sellmeier Equations (λ in µm)
no2 = 1.38757 + 0.70757λ2 / (λ2 – 0.00931) + 0.18849λ2 / (λ2 – 50.99741)
ne2 = 1.31021 + 0.84906λ2 / (λ2 – 0.00876) + 0.53607λ2 / (λ2 – 134.9566)

 

 

Sinoceramics’s Nd:YLF Production Capabilities:

 

  • Rod sizes from 2mm-10mm in diameter and from 1mm-150mm in length
  • Orientation of rod axis to crystal axis is within 1°
  • Polished only or AR coated rods
  • Nd dopant concentrations between 0.4-1.2%
  • Large rod and slab dimensions and non-standard dopant concentrations are available upon request

 

 

Specifications

Standard Dopant:

 1.1 ± 0.1%

Wavefront Distortion:

 < λ /4 per inch @ 633nm

Parallelism:

 < 10 arc seconds
Perpendicularity: < 5 arc minutes
Chamfer: 0.13 ± 0.07mm @ 45°
Surface Quality: 0/5 scratch and dig
End Coating: R < 0.15% @ 1047/1053nm
Surface Flatness: λ /8 @ 532.8nm