Product advantages
?High gain
?Low threshold
?High efficiency
?Low loss at 1.06um
?Good thermal conductivity and thermal shock characteristics
?Mechanical strength
?High optical quality
?Material characteristics allow for various modes of operation (CW, pulsed, Q-switched, mode locked and cavity dumped.)
| Doping(atm%) | 0.1% ~ 2.5% |
| Orientation | <111>,<100>,<110> crystalline direction (±0.5deg) |
| Dimension | Diameter:1-50mm Length:0.3-220mm(upon customer’s request) |
| Dimension Tolerances | rods with diameter: +0.0/-0.05mm Length: ±0.1mm |
| Wavefront Distortion | λ/8 per inch @ 632.8nm |
| Surface Flatness | λ/10 per inch @ 632.8nm |
| Surface Quality | 10/5 Scratch and Dig (MIL-O-1380A) |
| Clear Aperture | > 90% |
| Parallelism | < 10 arc seconds |
| Perpendicularity | < 5 arc minutes |
| Chamfer | < 0.1 mm @ 45° |
| AR Coating | Reflectivity R<0.25%@1064 nm per surface Damage threshold over 750 MW/cm2@1064nm, 10 ns and 10 Hz |
| HR Coating | Standard R>99.8%@1064nm and R<5%@808nm Other coatings are available per your reques |
| Extinction Ratio | Rods with diameter from 3 mm to 6.35 mm and with length to 100 mm: >30dB Rods with diameter from 7 mm to 10 mm and with length to 100 mm: >28dB |
| Damage Threshold | 750MW/CM2 at 1064nm, TEM00, 10ns, 10Hz |
| Chemical Formula | Nd:Y3Al5O12 |
| Crystal Structure | Cubic |
| Lattice constant | 12.01? |
| Concentration | ~1.2 x 1020 cm-3 |
| Melting Point | 1970°C |
| Rupture stress | 1.3-2.6*103 kg/cm2 |
| Density | 4.55g/cm3 |
| Mohs hardness | 8.5 |
| Refractive Index | 1.82 |
| Thermal Conductivity | 14 W/m /K @20℃, 10.5 W /m /K @100℃ |
| Thermal Expansion Coefficient | [100] Orientation--8.2x10-6/oC (0-250°C) [110] Orientation--7.7x10-6/oC (0-250°C) [111] Orientation--7.8x10-6/oC (0-250°C) |
Optical Properties:
| Laser Transition | 4F3/2 --> 4I11/2 |
| Pump Wavelength | 807.5nm |
| Lasing Wavelength | 1064nm |
| Photon Energy | 1.86×10-19J @ 1064nm |
| Emission Linewidth | 4.5? @1.064μm |
| Stimulated Emission Cross Section | 2.7-8.8x10-19 cm2 @Nd 1at% |
| Radiative Lifetime | 550μs |
| Fluorescence Lifetime | 230μs |
| Loss Coefficient | 0.003cm-1@ 1064nm |
| Absorption band at pump wavelength | 1nm |
| Linewidth | 0.6nm |
| Polarized Emission | Unpolarized |
| Thermal Birefringence | High |
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