Nd:YAG We produce Nd:YAG using the Czochralski technique for use in industrial, medical and scientific applications. We produce various finished laser rods with different sizes, slabs and wafers as well as supplying Nd:YAG blank or materials. 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.) Laser Rods ● Flat/flat ●Parallel/ anti-parallel wedged ●Brewster angle ●Concave/convex radii ●Cylinder grooved
Specifications
Material | Nd:YAG |
Nd dopant level | 0.1- 2.5(+/-0.1)atm% |
Orientation | <111>.<100>±5° |
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 |
