Neodymium doped Yttrium Lithium Fluoride

Material
Nd:YLF

Neodymium doped Yttrium Lithium Fluoride (Nd:LiYF4 or Nd:YLF) ) is a crystal which lasers at 1047nm and 1053nm wavelength. Its main advantages are: large fluorescence line width, low thermal lensing, low threshold for CW applications and naturally polarized oscillation, which makes Nd:YLF an excellent material for CW, mode locked operation. Impex HighTech use Nd:YLF crystals, which is grown on the Czochralsky methods and supply various laser rods and slabs with different doping upon customer’s request.

Properties
Optical properties
Lasing wavelength in nm
1047 nm

1053 nm

Refractive index @ 1064 nm
no= 1,448

ne= 1,470

dN/dT in 1/K
-4,6 · 10-6 (∥ c-axis)

-6,6 · 10-6(∥ a-axis)

Physical properties
Density in g/cm3
3,95
Crystal structure
tetragonal
Thermal conductivity in W/(m · K)
6
Thermal expansion in 1/K
8 · 10-6 (∥ c-axis)

13 · 10-6 (∥ a-axis)

Mohs hardness
5
Typical dopant concentration in %
1-2