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| Categories | Laser Crystals | 
|---|---|
| Place of Origin: | China | 
| Brand Name: | CRYLINK | 
| Certification: | Iso9001 | 
| MOQ: | 1 Pieces | 
| Price: | negotiation | 
| Packaging Details: | Carton | 
| Delivery Time: | 3-4 weeks | 
| Payment Terms: | TT | 
| Supply Ability: | 100 pieces /month | 
| Model Number: | CRYLINK-Yb CaF2 Crystal | 
| Name: | Yb CaF2 Laser Crystals | 
| Chemicalformula: | Yb3+:CaF2 | 
| Orientation: | [111] or [100] < ±0.5° | 
| Young'smodulus: | 146GPa | 
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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