Tetragonal Q Switched Single Mode YLF Optical Crystals

Basic Information
Place of Origin: China
Brand Name: CRYLINK
Certification: lso9001
Model Number: YLF-Crystal
Minimum Order Quantity: 1
Price: negotiation
Packaging Details: Carton
Delivery Time: 3-4 weeks
Payment Terms: T/T
Supply Ability: negotiation
Detail Information
Doping Concentration: 0.5–3.0% Chamfer: 0.1mm@45°
Clear Aperture: 95% Crystal System: Scheelite Structure
Symmetry: Tetragonal Melting Point: 1354°C
Feature: Low Beam Divergence, Q-switching Application: Lamp Pumping, Diode Pumping
High Light:

Single Mode YLF Optical Crystals


Q Switched YLF Optical Crystals


Tetragonal YLF Optical Crystals

Product Description





YLF laser crystal is the abbreviation for yttrium lithium fluoride (YLiF4). YLF laser crystal is birefringent, which eliminates thermally induced depolarization loss. Pure YLF crystals are transparent within the spectrum band of 0.12 – 7.5 µm, photo-, thermal- and radiation-resistant. The YLF crystals have low values of nonlinear refraction index and thermos optical constants. YLF has good optical properties with high transparency throughout the emission spectrum of the conventional sources used for pumping solid-state lasers. YLF does not show UV damage, and it has lower non-radiative decay rates for processes occurring between electronic levels participating in the pumping and lasing process. YLF is also a good medium for mode locking at 1047 or 1053 nm and 1.313 µm as a result of its natural birefringence and low thermal lensing. Mode-locked pulses from YLF are shorter thanks to its broader linewidth, both for the 1047/1053-nm and 1.313-µm emission peaks. Yttrium Lithium Fluoride (YLF) is a crystalline material used in optics and solid-state single crystal laser rods. YLF is typically doped with materials such as neodymium, holmium, erbium and is generally immediately available in most volumes.




  • High power, low beam divergence, efficient single mode operation.
  • High average power Q-switched at a moderate repetition rate
  • Linear polarized resonators for Q-switching and frequency doubling
  • Potential uniform mode for large diameter rods or slabs



  • Lamp pumping, diode pumping
  • Conventional sources used for pumping solid-state lasers
  • Cascade emission between intermediate levels as well as an up-converter
  • A good medium for mode locking at 1047 or 1053 nm and 1.313 µm


Doping Concentration 0.5–3.0%
Orientation Tolerance
Dopant Concentration Tolerance 0.10%
Parallelism <10〞
Chamfer 0.1mm@45°
Surface Quality 10-5 (MIL-O-13830A)
Wavefront Distortion <λ/8@633 nm
Surface Flatness λ/10 @633 nm
Clear Aperture 95%
Diameter 2-50.8 mm
Length 1-180mm

Physical and Chemical Properties



Crystal System Scheelite Structure
Symmetry Tetragonal
Space Group C64h-T41/a
Lattice Constants a=5.1710, c=10.7484 Å
Density (g/cm3) 3.96
Melting Point 1354°C
clearage Typical

Optical characteristics



Transmission Range 0.22 … 8 µm  
Reflective Loss  6 … 16%@0.2 … 10 µm 
Refractive Index no=1.46136, ne=1.48398@435.8nm

Index of Refraction


Tetragonal Q Switched Single Mode YLF Optical Crystals 0Tetragonal Q Switched Single Mode YLF Optical Crystals 1

Tetragonal Q Switched Single Mode YLF Optical Crystals 2


Contact Details

Phone Number : +8618699681379