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

Main features

 

  • High absorption and emission cross-sections (~10-19 cm2)
  • Good overlapping of the absorption band in the blue spectral region with the emission lines of the InGaN laser diodes and 2ω-OPSL
  • Lines of the InGaN laser diodes and 2ω-OPSL
  • Custom crystals available upon request

 

Application examples

 

  • Diode-pumped solid-state lasers for precise and efficient processing of metals such as copper or gold, entertainment industry and science
Request custom View stock
  • Description
  • Properties
  • Absorption and emission curves
  • Standard specifications

Very few laser materials have the necessary properties for the realization of lasing in the visible spectral range. Trivalent praseodymium (Pr3+) is known to be an interesting laser ion for use with solid-state lasers in the visible spectral range because of its energy levels scheme, providing several transitions in the red (640 nm, 3P0 to 3F2), orange (607 nm, 3P0 to 3H6), green (523 nm, 3P0 to 3H5), and dark red (720 nm, 3P0 3F3+3F4) spectral regions. 

Pr3+:YLF has been found to be a promising laser material for producing visible lasers directly and UV lasers through intracavity second-harmonic generation.

Spectroscopic and thermo-mechanical properties
Absorption peak wavelength 444 nm
Absorption cross-section at peak 8 × 10-20 cm2
Absorption bandwidth at peak wavelength ~5 nm
Laser wavelength 523 nm, 607 nm, 639 nm, 698 nm, 721 nm
Lifetime of 3P0 energy level 50 μs
Emission cross-section 20 × 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 -5,2 × 10-6 (||c) K-1, -7,6 × 10-6 (||a) K-1
Thermal expansion coefficient ~16 × 10-6 K-1
Typical doping level <1 at.%

Pr:YLF crystals
Orientation a-cut
Clear aperture >90%
Face dimensions tolerance +0,0/-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
Wavefront distortion λ/[email protected],8 nm 
Coatings AR(R<1%)@440-444 nm + AR(R<0,6%)@500-650 nm + AR(R<1%)@650-725 nm on both faces
Laser induced damage threshold >5 J/cm2@532 nm, 10 ns
Mount Unmounted
Order your item
Face dimensions Length End faces Doping Coatings SKU PRICE QUANTITY
2x2 mm
6 mm
Right-angle cut
0,5%
AR/[email protected] nm+500-725 nm
7793
480 €
3x3 mm
6 mm
Right-angle cut
0,5%
AR/[email protected] nm+500-725 nm
7794
540 €
⌀5 mm
6 mm
Right-angle cut
0,5%
AR/[email protected] nm+500-725 nm
7795
640 €