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Arminas Butkus +370 5 219 4884
Ho:YLF crystals
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Ho:YLF crystals

Main features

 

  • Long upper laser level lifetime
  • High emission cross-section
  • Naturally birefringent material
  • Low value of dn/dT → weak thermal lensing
  • Custom crystals available upon request

 

Application examples

 

  • Remote sensing and pollutant detection
  • Industry
  • Military
Request custom
  • Description
  • Properties
  • Standard specifications

Direct pumping of Ho:YLF crystals excludes losses of Tm3+ → Ho3+ energy transfer process. Ho3+:YLF crystal is characterized by long lifetime of 5I7 energy level results in an excellent performance in Q-switched operation.

Spectroscopic and thermo-mechanical properties
Absorption peak wavelength 1940 nm
Absorption cross-section at peak 1.2×10-20 cm2
Absorption bandwidth at peak wavelength ~18 nm
Laser wavelength 2060 nm
Lifetime of 5I7 energy level 10 ms
Emission cross-section 1.8×10-20 cm2
Refractive index @1064 nm no=1.448, ne=1.470
Crystal structure tetragonal
Density 3.95 g/cm3
Mohs hardness 5
Thermal conductivity 6 Wm-1K-1
dn/dT -4.6×10-6 (||c) K-1, -6.6×10-6 (||a) K-1
Thermal expansion coefficient 10.1×10-6 (||c) K-1, 14.3×10-6 ((||a) K-1
Typical doping level 0.5-1%
Ho:YLF crystals
Orientation a-cut
Clear aperture >90%
Face dimensions tolerance +0/-0,1 mm
Length tolerance ±0,1 mm
Parallelism error <10 arcsec
Perpendicularity error <10 arcmin
Protective chamfers <0,1 mm at 45˚
Surface quality 10-5 S-D
Surface flatness <λ/[email protected],8 nm
Coatings R<0,35%@1900-2100 nm on both faces
LIDT >10 J/cm2@2060 nm, 10 ns
Mount Unmounted
Order your item
Face dimensions Length End faces Doping Coatings SKU price quantity
5x5 mm
2 mm
Brewster cut
1%
uncoated
7857
580 €
5x5 mm
2 mm
Right angle cut
1%
7858
700 €
⌀8 mm
2 mm
Brewster cut
1%
uncoated
7859
580 €
⌀8 mm
2 mm
Right angle cut
1%
7860
700 €