Product advantages
?The quality of the beam has been improved
?Thermal effect has been reduced
?The efficiency of Grooved Rod has been improved by 10%-20%
| Nd Dopant Level | 0.5-1.1 atm % |
| Orientation | <111> crystalline direction (±0.5deg) |
| Dimension Tolerances | Diameter: ±0.05mm |
| Length: ±0.5mm | |
| Surface Quality | 10/5 Scratch and Dig |
| Clear Aperture | >90% |
| Surface Flatness | <λ/10@633nm |
| Wavefront Distortion | <λ/8@633nm |
| Parallelism | <10 arc seconds |
| Perpendicularity | <5 arc minutes |
| Chamfer | <0.1mmx45° |
| AR Coating | Reflectivity R<0.25%@1064 nm per surface Damage threshold over 750MW/cm2@1064nm, 10 ns and 10 Hz Other coating is per your request |
| 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 |
Physical Properties:
| Chemical Formula | Nd:Y3Al5O12 |
| Crystal Structure | Cubic |
| Lattice Constants | 12.01 |
| Concentration | ~1.2 x 1020 cm-3 |
| Melting Point | 1970℃ |
| Density | 4.56 g/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 | 7.8 x 10-6/K [111], 0 - 250℃ |
Optical Properties:
| Lasing Wavelength | 1064nm |
| Photon Energy | 1.86x10-19J@1064nm |
| Stimulated Emission Cross-Section | 2.8x10-19cm2 |
| Relaxation Time of Terminal Lasing Level | 30ns |
| Radiative Lifetime | 550μs |
| Spontaneous Fluorescence | 230μs |
| Loss Coefficient | 0.003 cm-1@1064nm |
| Pump Wavelength | 807.5 nm |
| Absorption band at pump wavelength | 1nm |
| Linewidth | 0.6nm |
| Polarized Emission | Unpolarized |
| Thermal Birefringence | High |
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