JOPTEC LASER CO., LTD
Laser Components and Beyond
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Specifications
| Material | Nd:YAG |
| Nd dopant level | 0.1- 2.5(+/-0.1)atm% |
| Orientation | or |
| 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 |
Properties
| 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--8.2x10-6/oC (0-250oC) |
| [110] Orientation--7.7x10-6/oC (0-250oC) | |
| [111] Orientation--7.8x10-6/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 | 2.7-8.8x10-19 cm2 @Nd 1at% |
| Fluorescence lifetime | 230µs |
| Refractive Index | 1.8197 @1.064µm |