Er，Yb：YAB
Crystal cross-section: (1×1)-(10×10)mm2; crystal thickness: 0.5-5mm; dimensional tolerance: ±0.1mm; wavefront distortion: ≤λ /8@633nm; surface quality: 10/5 (MIL-PRF-13830B); flatness: ≤λ /6@633nm; parallelism: better than 10 arcseconds. Erbium/Ytterbium-Codoped Yttrium Aluminum Tetraborate Laser Crystal Er,Yb:YAl3(BO3)4 Er:Yb:YAl3(BO3)4 is a new erbium/ytterbium-codoped laser material for the 1.55m band. Compared with erbium/ytterbium-codoped phosphate glass, it enables higher-power continuous-wave and higher-repetition-rate pulsed laser operation. The 1.55μm band is eye-safe, lies in the atmospheric transmission window and the lowest-loss window of silica fibers, penetrates smoke strongly, and matches the sensitive region of Ge and InGaAs detectors operating at room temperature. Applications include lidar, ranging, three-dimensional imaging, and target recognition.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Chemical Formula [Basic Crystal Parameters] | Er:Yb:YAl₃(BO₃)₄ |
| Crystal Structure [Basic Crystal Parameters] | Trigonal crystal system, D₃⁷-R32, a=b=9.293Å, c=7.245Å |
| Atomic Density [Basic crystal parameters; 1at.%Yb³⁺ or Er³⁺] | 0.55×10²⁰ |
| Mohs Hardness [Basic Crystal Parameters] | 7.5 |
| Crystal Density [Basic Crystal Parameters] | 3.7 g/cm³ |
| Coefficient of Thermal Expansion [298–573K；25at.%Yb³⁺；⊥c] | 2.0×10⁻⁶ |
| Coefficient of Thermal Expansion [298–573K；25at.%Yb³⁺；//c] | 9.7×10⁻⁶ |
| Coefficient of Thermal Expansion [298–573K；10at.%Yb³⁺；⊥c] | 1.2×10⁻⁶ |
| Coefficient of Thermal Expansion [298–573K；10at.%Yb³⁺；//c] | 8.5×10⁻⁶ |
| Pump Wavelength [Performance parameter comparison table; Er:Yb:YAl₃(BO₃)₄ crystal column only] | 976 nm |
| Peak Absorption Cross-Section [Performance parameter comparison table; Er:Yb:YAl₃(BO₃)₄ crystal column only; σ polarization] | 2.7×10⁻²⁰ |
| Absorption Band FWHM [Performance parameter comparison table; Er:Yb:YAl₃(BO₃)₄ crystal column only] | 19 nm |
| Peak Fluorescence Wavelength [Performance parameter comparison table; Er:Yb:YAl₃(BO₃)₄ crystal column only] | 1530 nm |
| Peak Emission Cross-Section [Performance parameter comparison table; Er:Yb:YAl₃(BO₃)₄ crystal column only; σ polarization] | 1.6×10⁻²⁰ |
| Fluorescence Lifetime [Performance parameter comparison table; Er:Yb:YAl₃(BO₃)₄ crystal column only] | 0.3 ms |
| Refractive Index [Performance parameter comparison table; Er:Yb:YAl₃(BO₃)₄ crystal column only; nₒ] | 1.75 |
| Thermal Conductivity [Performance parameter comparison table; Er:Yb:YAl₃(BO₃)₄ crystal column only] | 7.0 W·m⁻¹·K⁻¹ |
| Maximum Output Power [Performance parameter comparison table; Er:Yb:YAl₃(BO₃)₄ crystal column only] | >2 W |
| Maximum Slope Efficiency [Performance parameter comparison table; Er:Yb:YAl₃(BO₃)₄ crystal column only] | >30 % |
| Achievable Laser Wavelength Range [Performance parameter comparison table; Er:Yb:YAl₃(BO₃)₄ crystal column only] | 1520–1600 nm |
Datasheet
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