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Nd:YAG
Nd:YAG Laser Crystals: The Proven Industry Standard
Neodymium-doped Yttrium Aluminum Garnet (Nd:YAG) is the most established and universally trusted gain medium for near-infrared solid-state lasers across industrial, medical, and military applications.
- Ultimate Stability: The earliest and most mature laser material, guaranteeing uncompromising operational reliability.
- Harmonic Generation: The definitive core for frequency doublers, triplers, and higher-order multipliers.
- Precision Fabrication: Custom-manufactured rods and slabs precisely machined to your exact optical specifications.
Description
Parameter
Description
Advantages
1 ) High gain, Low threshold, High efficiency
2 ) Low loss at 1.06um, Good thermal conductivity and thermal shock characteristics
3 ) Mechanical strength, High optical quality
4 ) Material characteristics allow for various modes of operation (CW, pulsed, Q-switched, mode locked and cavity dumped.)
Parameter
Advantages
| Material | Nd:YAG |
|---|---|
| Nd Dopant Level | 0.1- 2.5(+/-0.1)atm% |
| Dimension | Diameter:1-50mm, Length:0.3-220mm(upon customer’s request) |
| Diameter Tolerance | +0/-0.04mm |
| Length Tolerance | +0.5/-0mm |
| Wavefront Distortion | <λ/10 per inch@632.8nm |
| Chamfer | <0.1mm@45° |
| Damage Threshold | >750MW/cm2@1064nm 10ns 10HZ |
| Clear Aperture | >95% |
| Flatness | λ/10 per inch@632.8nm |
| Scratch/Dig | 10-5 @MIL-0-13830A |
| Barrel Finish | 50-80 micro-inch(RMS) |
| Chips | <0.1mm |
| Extinction Ratio | >30dB(depends on actual sizes ) |
| Perpendicularity | <5 arc minutes |
| Parallelism | <10 arc seconds |
| Anti-Reflection Coating | R<0.15%@1064nm per surface |
| High-Reflection Coating | Standard HR coating with R>99.8% @1064nm and R<5%@808nm |
Specifications
| Chemical Formula | Nd:Y3Al5O12 |
|---|---|
| Crystal Structure | Cubic |
| Lattice Constant | 12.01Å |
| Melting Point | 1970° |
| Rupture Stress | 1.3-2.6*103 kg/cm2 |
| Density | 4.55g/cm3 |
| Mohs Hardness | 8.5 |
| Thermal Expansion Coefficient | [100] Orientation–8.2×10-6/oC (0-250oC) |
| [110] Orientation–7.7×10-6/oC (0-250oC) | |
| [111] Orientation–7.8×10-6/oC (0-250oC) | |
| Laser Transition | 4F3/2 –> 4I11/2 |
| Laser Wavelength | 1064nm |
| Photon Energy | 1.86×10-19J |
| Emission Linewidth | 4.5Å @1.064µm |
| Stimulated Emission Cross Section | 2.7-8.8×10-19 cm2 @Nd 1at% |
| Fluorescence Lifetime | 230µs |
| Refractive Index | 1.8197 @1.064µm |