Nd:Ce:YAG is an excellent laser material widely used for no-water cooling and miniature laser systems. In double doped Nd:Ce:YAG crystals Cerium are chosen as sensitizer for Nd3+ ions because of its strong absorption in UV spectral region at flash lamp pumping and efficient energy transfer to the Nd3+ excited state. As a result, thermal distortion in Nd: Ce:YAG is low and the output laser energy is greater than that in Nd:YAG at the same pumping. Therefore it is possible to realize high power lasers with good beam quality. Lasing wavelength at 1064 nm, laser damage threshold and thermal conductivity of the Nd: Ce:YAG crystals are the same as for Nd:YAG. It is the most ideal laser material for the air cooling lasers .It is suitable for different modes of operation (pulsed, Q-switched, mode locked) and high-average power lasers.
| Main Features |
- High optical quality
- High efficiency
- Low threshold
- Good thermal stability
- Good anti-violet radiation property
| Physical and Optical Properties |
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| Laser Wavelength |
1.064μm |
| Photon Energy |
1.86×10-19J@1064nm |
| Emission Linewidth |
4.5Å@1064nm |
| Emission Cross Section (Nd1at%) |
2.7~8.8×10-19cm-2 |
| rescence Lifetime (Nd1at%) |
230μs |
| Index of Refraction |
1.8197@1064nm |
| Crystal Structure |
Cubic |
| Lattice Parameters |
12.01Å |
| Melting Point |
1970℃ |
| Moh Hardness |
8.5 |
| Density |
4.56g/cm3 |
| Specific Heat (0-20) |
0.59J/g.cm3 |
| Young's Modulus |
3.17×104Kg/mm2 |
| Thermal Expansion Coefficient |
[100]Direction:8.2×10-6/℃(0~250℃) |
| [110]Direction:7.7×10-6/℃(0~250℃) |
| [111]Direction:7.8×10-6/℃(0~250℃) |
| Thermal Conductivity |
14W/m/K(@20℃) |
| 10.5W/m/K(@100℃) |
| Thermal Optical Coefficient (dn/dT) |
7.3×10-6/℃ |
| Thermal Shock Resistance |
790W/m |
| Solubility |
Water: Insoluble; Common Acids: Slightly |
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| Specifications |
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| Dopant concentration |
Nd:1.1~1.4at%, Ce:0.05~0.1at% |
| Orientation |
[111]±5° |
| Rod Sizes |
Diameter:3~6mm, Length:40~100mm |
| Diameter Tolerance |
+0/-0.02mm |
| Length Tolerance |
+0.5/-0mm |
| Surface Flatness |
<λ/10@632.8nm |
| Wavefront Distortion |
<λ/10@632.8nm per inch |
| Surface Quality |
10/5 |
| Clear Aperture |
>95% |
| Parallelism |
<10 arc seconds |
| Perpendicularity |
<5 arc minutes |
| Chamfer |
0.1mm@45° |
| Barrel Finish |
Ground Finish with 400# Grit |
| Extinction Ratio |
>30dB |
| Anti Reflection Coating |
R<0.15%@1064nm per surface |
| High Reflection Coating |
Standard HR coating with R>99.8%@1064nm and R<5%@808nm |
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