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Brand Name : | CRYLINK |
Certification : | Iso9001 |
Price : | negotiation |
Delivery Time : | 3-4 weeks |
Payment Terms : | TT |
Supply Ability : | 100 pieces /month |
Model Number : | CRYLINK-Yb CaF2 Crystal |
Description
Due to the toughness and the flexible and cheap production process, CaF2 has been used in many substrate materials for laser crystals. As an amplifying ion, Yb3+ also allows a three-level laser scheme, leading to low quantum defects and a significantly longer fluorescence lifetime. Yb3+:CaF2 can also provide a high optical efficiency and high output powers due to the reduced thermal load. Recently, ytterbium-doped alkaline-earth fluoride is mostly used in diode-pumped femtosecond laser and amplifiers. Alkaline-earth fluorides which can be easily grown by using the standard Czochralski or Bridgman technique show a great potential in the wide transmission range, high damage threshold and low dispersion behavior.
Features
Applications
Chemical and physical properties
Property | Value |
Chemicalformula | Yb3+:CaF2 |
Crystalstructure | cubic |
Latticeparameters, | 5.462 |
Orientation | [111] or [100] < ±0.5° |
Massdensity | 3.18 g/cm3 |
Mohshardness | 4 |
Young'smodulus | 146GPa |
Tensilestrength | 2GPa |
Meltingpoint | 1418°C |
Thermalconductivity | 9.71 |
SpecificHeat/ (Jg-1K-1) | 0.8876 |
ThermalExpansion /(10-6/°C@25°C | (16.5...19.4) |
Thermalshock resistance parameter | 800W/m |
Refractive Index @ 1064 nm | 1.2996 |
Optical properties
Property | Value |
Optical Density | 0.1 to 0.8 |
Fluorescencelifetime | 2.4ms |
Concentrations | 0.5mol % ~ 30 mol % |
Emissionwavelength | 1015nm ~ 1060 nm |
AbsorptionCoefficient | 1.0cm-17 cm-1 |
Ground state absorption cross section | 0.8x10-20 cm2 |
Emission state absorption cross section: | 2.2x10-20 cm2 |
Transmission | 10% to 90% |
Coatings | AR0.2% @1030nm |
Damage Threshold: | > 500 MW / cm2 |
Polishing Specification
Property | Value |
OrientationTolerence | <0.5° |
Thickness/DiameterTolerance | ±0.05mm |
Surface Flatness | </8@632nm |
Wavefront Distortion | </8@632nm |
Surface Quality | 10/5 |
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