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 | 12.01Å |
| 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 | 4.5Å @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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