Yb:CaF2 – Laser Crystal – Gain Medium – Customized Products

Product ID: 6600


Yb:CaF2 – Laser Crystal – Gain Medium – Customized Products

Yb:CaF2 is a new laser crystal formed by doping Yb into CaF2. The main emission peak is reported 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, it has the following characteristics:

  • Low quantum defect
  • A comparably long fluorescence lifetime
  • High thermal conductivity
  • 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 applications.

Furthermore, from the current point of view, the crystal growth technologies of Yb: CaF2 promise to be scalable, allowing for producing excellent optical quality material.

$100 is a deposit, not the final price of the product. Please contact us for price if needed.


Kerr-lens mode-locked oscillator
Yb: CaF2 thin-disk laser
Diode-pumped Yb: CaF2 amplifier

Material Specifications

Orientation(atm%) 0.5 mol % ~ 30 mol %
Orientation [111] or [100] < ±0.5°
Orientation Tolerance < 0.5°
parallelism 10
Verticality 15ˊ
Surface Finish 10-5(MIL-O-13830A)
Wavefront Distortion <λ/8 @632 nm
Surface Roughness <λ/8 @632 nm
Clear Aperture >90%
Chamfer <0.1×45°
Thickness/Diameter Tolerance ±0.05 mm
Biggest Size 2*2-15*15 mm×20mm
Thermal Shock Parameters 800 W/m
Coating AR≤ 0.2% @1030nm

Physical and Chemical Properties

Crystal Structure Cube
Lattice Constant 5.462 Å
Density 3.18 g/cm3
Melting Point 1418°C
Thermal Conductivity/(W·m-1·K-1 @ 25°C) 9.71
Specific Heat Capacity/(J·g-1·K-1 0.8876
Thermo-optic Coefficient(dn / dT) −11.3
Thermal Expansivity /(10-6·K-1 @ 25°C) 19
Mohs Hardness 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
Transmit Bandwidth 70 nm
Refractive Index@1.064μm 1.2996
Thermo-optic Coefficient(10−6 K−1 -3.7
Transmission 10% to 90%
Damage Threshold > 500 MW/cm2

Standard Product

Material Diameter,mm Coating
Yb(5%):CaF2 dia 5 AR≤ 0.2% @1030+940nm
Yb(3%):CaF2 dia 5


Absorption and Emission Spectra

TaorLab laser crystals

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