Crystals Materials
Tm:YLF Crystals for aerospace, medical, and industrial applications
Tm:YLF laser crystal has low non-linear refraction index value and thermo optical constants, which makes Tm:YLF crystal applicable in research, development, education, production, photonics, optic, laser technology and telecommunications.
| Material | Tm:LiYF4 |
|---|---|
| Doping | 2% ~ 12% |
| Orientation | a-cut or c-cut |
| Dimension Tolerances | ±0.05 mm |
| Surface Quality | 10/5 S/D |
| Parallelism | < 10 arcsec |
| Perpendicularity | < 5 arcmin |
| Clear Aperture | > 90% |
| Wavefront Distortion | λ/10 @ 633 nm |
| Surface Flatness | < λ/10 @ 632.8 nm |
| Chamfer | < 0.1 mm @ 45° |
| Coating | AR/HR/PR coating upon customer's request |
| Damage Threshold | 750mW/cm2 at 1064 nm, TEM00, 10 ns, 10Hz |
| Crystal Structure | Tetragonal |
| Lattice Constant | a=5.16Å; c=10.85Å |
| Density | 3.99 g/cm³ |
| Melting Point | 819℃ |
| Thermal Conductivity | 6 Wm-1K-1 |
| Thermal Optical Coefficient(dn/dT) | π = 4.3 x 10-6 x °K-1; σ = 2.0 x 10-6 x °K-1 |
| Thermal Expansion (10-6·K-1@25°C ) | 10.1×10-6 (//c) K-1, 14.3×10-6((//a) K-1 |
| Hardness (Mohs) | 5 |
| Shear Modulus (Gpa) | 85 |
| Specific Heat | 0.79 J/gK |
| Poisson Ratio | 0.3 |
| Laser Transition | 3F4 → 3H6 |
| Laser Wavelength | π: 1880 nm; σ: 1908 nm |
| Absorption Cross-section at Peak | 0.55×10-20 cm2 |
| Absorption Bandwidth at Peak Wavelength | 16 nm |
| Absorption Peak Wavelength | 792 nm |
| Lifetime of 3F4 Thulium Energy Level | 16 ms |
| Quantum Efficiency | 2 |
| Non-linear Index n2 | 0.6 x 10-13 |
| Optical Quality | < 0.3 x 10-5 |
| Refractive Index @1064 nm | no=1.448, ne=1.470 |
| Laser Induced Damage Threshold | > 10 J/cm2 @1900 nm, 10 ns |
| Coatings | R<0.5% @792 nm + R<0.15% @1800-1960 nm on both sides |
Stock specification list
If need other specifications and quantities products, please contact us(sales@aogcrystal.com).
Anti-reflection coatings are available at your specified wavelength.
Be sure to wear laser safety goggles when checking optical path and adjusting optical axis.
To inquiry or order a finished Tm:YLF laser rod, please specify the specification listed above, for common application, we only need to know the main specification: Tm-dopant concentration, sizes, and coating. For special request,
please specify specification in details for evaluation and fabrication.
| Part Number | Face size | Length | Doping, atm.% | End Faces | Coating |
|---|---|---|---|---|---|
| Tm-YLF-001 | Φ3.0 mm | 6.0 mm | 3.0 | Right-angle cut | AR(R<0.5%)792 nm + AR(R<0.2%)1800-1960 nm |
| Tm-YLF-002 | 3.0*3.0 mm | 8.0 mm | 3.0 | Brewster cut | Uncoated |
| Tm-YLF-003 | 3.0*3.0 mm | 8.0 mm | 3.0 | Right-angle cut | AR/AR@792 nm+ 1800-1960 nm |
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