Product advantages
?Low threshold
?Very high slope efficiency(30%-50% more than Nd:YAG)
?Good anti-UV irradiation property
?Good thermal stability
?High optical quality
| Crystal Structure | Cubic |
| Lattice constant | 12.01? |
| 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/°C (0-250°C) [110] Orientation--7.7x10-6/°C (0-250°C) [111] Orientation--7.8x10-6/°C (0-250°C) |
| Laser transition | 4F3/2 --> 4I11/2 |
| Laser wavelength | 1064nm |
| Photon energy | 1.86×10-19J |
| Emission linewidth | 4.5? @1.064μm |
| Stimulated emission cross section | 2.7-8.8x10-19 cm2 @Nd 1at% |
| Fluorescence lifetime | 230μs |
| Refractive Index | 1.8197 @1.064μm |
| Nd Dopant Level | Nd: 1.1-1.4 at%, Ce: 0.05-0.1 at% |
| Orientation | <111> crystalline direction (±5deg) |
| Dimension | Diameter: 3-6mm Length: 40-80mm |
| Dimension Tolerance | Diameter: +0/-0.02mm Length: +0.5/-0mm |
| Surface Quality | 10/5 Scratch and Dig |
| Clear Aperture | >90% |
| Surface Flatness | <λ/10@633nm |
| Wavefront Distortion | <λ/10@633nm per 25mm |
| Parallelism | <10 arc seconds |
| Chamfer | <0.1mmx45° |
| AR Coating | Reflectivity R<0.15%@1064 nm per surface |
| HR Coating | Reflectivity R>99.8%@1064nm & R<5%@808nm |
| Extinction Ratio | >30dB |
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