Nd:Ce:YAG Laser Crystal
Nd:Ce:YAG is an excellent laser material used for no-water cooling and miniature laser systems. The thermal distortion of Nd:Ce:YAG is appreciably less and the output laser energy is greater(30%-50%) than that in Nd:YAG at the same pumping. It is the most ideal laser material for air cooling laser and is also suitable for different modes of operation (pulsed, Q-switched, mode locked) and high-average power lasers.
Advantages
1 ) Low threshold
2 ) Very high slope efficiency(30%-50% more than Nd:YAG)
3 ) Good anti-UV irradiation property
4 ) Good thermal stability
5 ) High optical quality
Specifications
Material | Nd:Ce:YAG |
Dopant Concentration | Nd:1.0 – 1.1atm% Ce:0.05-0.1atm% |
Orientation | <111> or <100> |
Dimension | Diameter:1mm-30mm Length:1mm-115mm(upon customer’s request) |
Wavefront Distortion | <λ/10 per inch@632.8nm |
Extinction Ratio | >30dB (depends on actual sizes) |
Diameter Tolerance | +0/-0.04mm |
Length Tolerance | +0.5/-0mm |
Chamfer | <0.1mm@45° |
Chips | <0.1mm |
Barrel Finish | 50-80 micro-inch(RMS) |
Clear Aperture | >95% |
Flatness | λ/10 per inch@632.8nm |
Scratch/Dig | 10-5 @MIL-0-13830A |
Perpendicularity | <5 arc minutes |
Parallelism | <10 arc seconds |
Damage Threshold | >750MW/cm2@1064nm 10ns 10HZ |
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
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–8.2×10-6/oC (0-250oC) |
[110] Orientation–7.7×10-6/oC (0-250oC) | |
[111] Orientation–7.8×10-6/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 | 2.7-8.8×10-19 cm2 @Nd 1at% |
Fluorescence Lifetime | 230µs |
Refractive Index | 1.8197 @1.064µm |