Crystals Materials
Tm:YAG Crystals applications for 2.0 µm Medical Laser
One of the most notable features of Tm:YAG crystal is its ability to emit laser light in the 2 μm wavelength range, which is highly desired for applications such as laser surgery, remote sensing, and laser pumping of other lasers. Tm:YAG can also be used to generate laser light at longer wavelengths (up to 2.3 μm ) by tuning the laser cavity, making it useful for spectroscopy and other research applications.
| Tm Doping (atm%) | 0.5~5 at% |
| Orientation | [111] <5° |
| Surface Quality | 10/5 S/D |
| Parallelism | < 10″ |
| Perpendicularity | < 5' |
| Clear Aperture | > 90% |
| Wavefront Distortion | ≤ 0.125λ/25 mm @632.8 nm |
| Surface Flatness | < λ/8 @ 632.8 nm |
| Chamfer | < 0.15±0.05 mm |
| Coating | AR: ≤0.25% @2μm |
| Chemical Formula | Tm:Y3Al5O12 |
| Crystal Structure | Cubic |
| Lattice Constant | 12.01 Å |
| Density | 4.56 ± 0.04 g/cm³ |
| Melting Point | 1970°C |
| Thermal Conductivity | 14 W/m/K @ 20°C |
| Specific Heat | 0.59 J/g/K |
| Thermal Optical Coefficient (dn/dT) | 7.3×10^-6/K |
| Hardness (Mohs) | 8.5 |
| Young’s Modulus (GPa) | 317 |
| Shear Modulus (GPa) | 310 |
| Extinction Ratio | 25 dB |
| Poisson Ratio | 0.25 |
| Thermal Shock Resistance | 790 W/m |
| Laser Transition | 3F4 → 3H6 |
| Laser Wavelength | 1.87~2.16 μm |
| Temperature Dependence of Refractive Index | 7.3 × 10^-6/K |
| Absorption Cross Section | 7.5 × 10^-21 cm^2 |
| Diode Pump Band | 785 nm, 680 nm |
| Emission Cross Section @2013 nm | 2.9 × 10^-20 cm^2 |
| Fluorescence Lifetime | 11 ms |
| Refractive Index @632 nm | 1.83 |
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:YAG 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-YAG-001 | 3.0*3.0 mm | 8.0 mm | 3 | Right-angle cut | AR/AR@792 nm+ 1800-1960 nm |
| Tm-YAG-002 | 3.0*3.0 mm | 8.0 mm | 3 | Brewster cut | Uncoated |
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