Description
Yb:CaF2 is an innovative laser crystal formed by doping ytterbium (Yb) into calcium fluoride (CaF2). This crystal is gaining attention due to its main emission peaks at 1033 nm and 1050 nm, with an emission linewidth of 70 nm. One of the standout characteristics of Yb:CaF2 is the absence of undesired loss transitions, such as up-conversion, excited state-absorption, and concentration quenching. This, combined with its low quantum defect and comparably long fluorescence lifetime, makes it highly efficient for various laser applications.
The high thermal conductivity and wide emission linewidth of Yb:CaF2 make it particularly suitable for high power diode-pumped systems and laser amplifiers. These properties contribute to high optical-to-optical conversion efficiencies, making it an ideal choice for diode-pumped femtosecond lasers and amplifiers. The crystal growth technologies for Yb:CaF2 are also promising in terms of scalability, allowing for the production of high-quality optical materials.
Additionally, Yb:CaF2 exhibits a significant thermo-optical coefficient, making it an excellent candidate for applications such as Kerr-lens mode-locked oscillators and thin-disk lasers. Its robust physical and chemical properties, including a cubic crystal structure, high melting point, and substantial thermal conductivity, further enhance its appeal for advanced laser systems. As research and development in crystal growth technologies continue to advance, Yb:CaF2 is poised to play a crucial role in the future of laser technology.
Yb:CaF2 Laser Crystal
Specifications
| Type Of Crystal: | TeO2 |
|---|---|
| Crystal Diameter: | 6 mm |
| Crystal Length: | 20 mm |
| AR Coating: | One side |
| Concentration Tolerance (atm%): | 0.5 mol % ~ 30 mol % |
| Orientation: | [111] or [100] < ±0.5° |
| Laser Transition: | 2F5/2→2F7/2 |
| Laser Wavelength: | 1033/1050 |
| Absorption Coefficient: | 1.0 cm-1 ~ 7 cm-1 |
| Pump Wavelength: | 980 nm |
| Emission Band Width: | 70 nm |
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Features
- Broad Emission Linewidth: 70 nm FWHM for sub-100 fs pulse generation.
- Low Quantum Defect: Minimizes thermal load for efficient high-power operation.
- Long Fluorescence Lifetime: 2.4 ms for high energy storage capacity.
- High Thermal Conductivity: 9.71 W·m⁻¹·K⁻¹ enables excellent heat dissipation.
- No Undesired Loss Mechanisms: Free from up-conversion, ESA, and concentration quenching.
Applications
- High Power Diode Pumped Systems: Yb:CaF2 is ideal for high power diode pumped systems due to its low quantum defect and high optical-to-optical conversion efficiencies.
- Laser Amplifiers: Utilized in laser amplifiers for its comparably long fluorescence lifetime and wide emission linewidth.
- Diode-Pumped Femtosecond Lasers and Amplifiers: Suitable for femtosecond lasers and amplifiers, offering high performance in these applications.
- Kerr-Lens Mode-Locked Oscillator: Employed in Kerr-lens mode-locked oscillators due to its wide emission linewidth and high thermal conductivity.
- Yb:CaF2 Thin-Disk Laser: Used in thin-disk laser configurations for efficient laser operation.
- Diode-Pumped Yb:CaF2 Amplifier: Ideal for diode-pumped Yb:CaF2 amplifiers, providing scalability and excellent optical quality.
Frequently Asked Questions
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