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Yb:CaF2

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Yb:CaF2

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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 Laser Crystal

Name : Yb:CaF2

Concentration Tolerance (atm%) : 0.5 mol % ~ 30 mol %

Orientation : [111] or [100] < ±0.5°

Parallelism : 10

Perpendicularity : 15

Surface Quality : 10-5(MIL-O-13830A)

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Yb: CaF2 is a new laser crystal which is formed by doping Yb into CaF2. The main emission peak are reported to be at 1033 nm and 1050 nm with the emission linewidth of 70 nm. Because of the absence of undesired loss transitions such as up-conversion, excited state-absorption and concentration quenching, their low quantum defect, a comparably long fluorescence lifetime, high thermal conductivity and wide emission linewidth, ytterbium-doped CaF2 is preferably utilized for high-power diode-pumped systems and laser amplifiers with high optical-to-optical conversion efficiencies, diode-pumped femtosecond (fs) lasers and amplifiers are one of the important potential application. Furthermore, at the current point of view the crystal growth technologies of Yb: CaF2 promise to be scalable, which allows for the production of excellent optical quality material.

Parameter

Material and Specifications

Concentration Tolerance (atm%) 0.5 mol % ~ 30 mol %
Orientation [111] or [100] < ±0.5°
Orientation Tolerance < 0.5°
Parallelism 10
Perpendicularity 15
Surface Quality 10-5(MIL-O-13830A)
Wavefront Distortion </8 @632 nm
Surface Flatness </8 @632 nm
Clear Aperture >90%
Chamfer <0.1×45°
Thickness/Diameter Tolerance ±0.05 mm
Maximum Dimensions 2*2-15*15 mm×20mm
Thermal Shock Resistance Parameter 800 W/m
Coatings AR≤ 0.2% @1030nm

Physical and Chemical Properties
Crystal Structure cubic
Lattice Constants 5.462
Density 3.18 g/cm3
Melting Point 1418°C
Thermal Conductivity /(Wm-1K-1@25°C) 9.71
Specific Heat/ (Jg-1K-1) 0.8876
Thermal Optical Coefficient(dn/dT) 11.3
Thermal Expansion /(10-6K-1@25°C ) 19
Hardness (Mohs) 4
Young`s Modulus /GPa 146
Tensile Strength/Gpa 2

Optical and Spectral Properties
Laser Transition 2F5/22F7/2
Laser Wavelength 1033/1050
Optical Density 0.1-0.8
Absorption Coefficient 1.0 cm-1 ~ 7 cm-1
Pump Wavelength 980 nm
Emission State Absorption Cross Section 2.2×10-20 cm2
Ground State Absorption Cross Section 0.8×10-20 cm2
Fluorescence Lifetime 2.4 ms
Emission Band Width 70 nm
Refractive Index @1.064m 1.2996
Thermal Optical Coefficient (106 K1) -3.7
Transmission 10% to 90%
Damage Threshold > 500 MW/cm2

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