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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 Laser Crystal |
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 |
Chemical formula | Yb3+:CaF2 |
Crystal structure | cubic |
Lattice parameters, | 5.462 |
Orientation | [111] or [100] < ±0.5° |
Mass density | 3.18 g/cm3 |
Mohs hardness | 4 |
Young's modulus | 146 GPa |
Tensile strength | 2 GPa |
Melting point | 1418°C |
Thermal conductivity | 9.71 |
Specific Heat/ (Jg-1K-1) | 0.8876 |
Thermal Expansion /(10-6/°C @25°C) | (16.5...19.4) |
Thermal shock resistance parameter | 800 W/m |
Refractive Index @ 1064 nm | 1.2996 |
Optical properties
Property | Value |
Optical Density | 0.1 to 0.8 |
Fluorescence lifetime | 2.4ms |
Concentrations | 0.5 mol % ~ 30 mol % |
Emission wavelength | 1015 nm ~ 1060 nm |
Absorption Coefficient | 1.0 cm-1 ~ 7 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 | AR≤ 0.2% @1030nm |
Damage Threshold: | > 500 MW / cm2 |
Polishing Specification
Property | Value |
Orientation Tolerence | < 0.5° |
Thickness/Diameter Tolerance | ±0.05 mm |
Surface Flatness | </8 @632 nm |
Wavefront Distortion | </8 @632 nm |
Surface Quality | 10/5 |
Parallel | 10 |
Perpendicular | 15 |
Clear Aperture | >90% |
Chamfer | <0.1×45° |
Maximum dimensions | 2*2-15*15 mm×20mm |
Standard products
Material | Dimensionsmm | Coatings |
Yb(5%):CaF2 | dia 5 | AR≤ 0.2% @1030+940nm |
3x3 | ||
6x6 | ||
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