Nd:YAG crystal is the most widely used solid state laser crystal. Nd:YAG laser crystal are wildly used in all types of solid-state laser systems-frequency-doubled continuous wave, high-energy Q-switched, and so forth. Its good fluorescent lifetime thermal conductivity and physical strengths makes it suitable for high power lamp pumped laser.
Nd:YAG crystal are widely employed in laser medical surgery, such as laser surgery and dermatology. Nd:YAG crystal are employed for procedures like eye surgeries (e.g., LASIK), treating skin conditions (e.g., tattoo removal, hair removal), and various other dental surgical due to high gain, low threshold, high efficiency.
| Material | Nd3+:Y3Al5O12 |
|---|---|
| Doping | 0.1 ~ 2.5atm% |
| Size | 3 mm ~ 150 mm or Upon customer request |
| 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 |
| Chemical Formula | Nd3+:Y3Al5O12 |
|---|---|
| Crystal Structure | Cubic |
| Lattice Constant | 12.01Å |
| Density | 4.5g/cm3 |
| Melting Point | 1970°C |
| Thermal Conductivity (W/m/k@25°C) | 0.14 W |
| Specific Heat/(J/g/K) | 0.59 |
| Rupture Stress | 1.3-2.6*103 kg/cm2 |
| Mohs Hardness | 8.5 |
| Young's Modulus/GPa | 317 |
| Shear Modulus/Gpa | 54.66 |
| Extinction Ratio | 25 dB |
| Poisson Ratio | 0.25 |
| Laser Transition | 4F3/2 →> 4I11/2 |
| Photon Energy | 1.86 x 10-19J |
| Laser Transition Wavelength, λl | 1064 nm |
| Pump Transition Wavelength, λp | 808 nm |
| Pump Transition Bandwidth, Δλp | < 4 nm |
| Laser Transition Bandwidth, Δλl | ~0.6 nm |
| Pump Transition Peak Cross Section, σp(E-20 cm2) | 6.7 |
| Laser Transition Peak Cross Section, σl(E-20 cm2) | 28 |
| Upper Laser Manifold Lifetime, τ(msec) | 0.26 |
| Quantum Defect Fraction | 0.24 |
| Fractional Heat Generation | 0.37 |
| Refractive Index | 1.8197 @1.064 µm |
| Fluorescence Lifetime | 230 µs |
Stock specification list
| Part Number | Face size | Length | Doping, atm.% | Coating |
|---|---|---|---|---|
| Nd-YAG-001 | Φ3.0 mm | 60.0 mm | 0.8 | AR/AR@1064 nm |
| Nd-YAG-002 | Φ9.0 mm | 150.0 mm | 0.8 | AR/AR@1064 nm |
| Nd-YAG-003 | 3.0*3.0 mm | 2.0 mm | 1.1 | HR@1064 nm + HT@808 nm/AR@1064 nm |
| Nd-YAG-004 | 3.0*3.0 mm | 5.0 mm | 1.1 | HR@1064 nm + HT@808 nm/AR@1064 nm |
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