Nd:YAG
Nd:YAG crystal is the most widely used laser crystal on solid-state lasers. Sinoceramics is able to supply the quality of Nd:YAG rods with high optical homogeneity, consistent performance, high processing accuracy and on time delivery.
Basic Properties (1.0 atm% Nd doped)
|
Chemical Formula: |
Nd:Y3Al5O12 |
|
Crystal Structure: |
Cubie |
|
Lattice Constants: |
12.01 A |
| Concentration: | ~1.2×1020cm-3 |
| Melting Point: | 1970°C |
| Density: | 4.56 g/cm3 |
| Mohs Hardness | 8.5 |
| Refractive Index | 1.82 @ 1.64nm |
| Thermal Expansion Coefficient | 7.8×10-6/K[111],0 -250°C |
| Thermal Conductivity | 14W/m /K @ 20°C, 10.5W/m /K @ 100°C |
| Lasing Wavelength | 1064nm |
| Stimulated Emission Cross Section | 2.8×10-19cm-2 |
| Relaxation Time of Terminal Lasing Level | 30ns |
| Radiative Lifetime | 550ms |
| Spontaneous Fluorescence | 230ms |
| Loss Coefficient | 0.003 cm-1 @ 1064nm |
| Effective Emission Cross Section | 2.8×10-19cm2 |
| Pump Wavelength | 807.5nm |
| Absorption Band at Pump Wavelength | 1nm |
| Line Width | 0.6nm |
| Polarized Emission | Unpolarized |
Standard Products Specification
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Dopant Concentration (atomic %): |
0.9% – 1.1% |
|
Orientation: |
<111> crystalline direction |
|
Wavefront Distortion: |
1/8 per inch @ 633nm |
| Extinction Ratio : | > 28dB |
| Dimension Tolerance: | ± 0.05mm for diameter, ± 0.2mm for length |
| Parallelism: | < 10 arc seconds |
| Perpendicularity: | < 5 arc minutes |
| Surface Quality: | 10-5 scratch and dig |
| Surface Flatness: | < λ /10 @ 633 nm |
| AR Coating: | R < 0.1% @ 1064nm |
| Damage Threshold: | > 500MW/cm2 @ 1064nm, 10ns, 10Hz |