Nd:YAG Rods
Dimension: Dia. 3.00mm
Thickness: 55.00mm
Tolerance : +/-0.10mm
Nd:YAG Rods
Neodymium doped Yttrium Aluminum Garnet (Nd:YAG) is the most commonly employed solid state lasing medium for material processing applications. Nd:YAG has relatively good optical absorption and conversion efficiency, low lasing threshold and good thermal dissipation for high power operation.
Nd:YAG (neodymium-doped yttrium aluminum garnet; Nd:Y3Al5O12) is a crystal that is used as a lasing medium for solid-state lasers. The dopant, triply ionized neodymium, Nd(III), typically replaces a small fraction (1%) of the yttrium ions in the host crystal structure of the yttrium aluminum garnet (YAG), since the two ions are of similar size. It is the neodymium ion which provides the lasing activity in the crystal, in the same fashion as red chromium ion in ruby lasers.
YAG laser optically pumped by Xenon or Krypton lamp
Advantage of Nd:YAG Crystal
During the last decade, Nd:YVO4 has been developed as a promising substitutes for Nd:YAG in diode-pumped lasers due to its high absorption and emission cross-sections. However, the applications of Nd:YVO4 are limited due to its poor physical-mechanical properties and growth difficulty etc. Now, we have developed the high-doped Nd:YAG (SUPER-Nd:YAG) recently. It shows high absorption cross-section and have many advantages over Nd:YVO4:
• Due to the cubic symmetry and high quality, Nd:YAG is easy to operate with TEMoo mode
• Nd:YAG can be Q-switched with Cr4+:YAG directly
• Nd:YAG can produce blue laser with the frequency-doubling of 946nm
• Nd:YAG can be operated in a very high power laser up to kW level
The high neodymium-ion doped YAG has been grown by the novel technique-Temperature Gradient Technique (TGT). The Nd concentration can be doped up to 3%. As large as 100x80mm bulk crystals with excellent optical homogeneity, less scattering particles, low dislocation density have been obtained.
Neodymium-doped yttrium aluminum garnet (Nd:YAG) crystal can excites pulsed laser or continuous laser. The emitted laser is infrared wavelength 1.064μm. The superior basic properties make it often used in Near-far infrared lasers, frequency-doubled and triple-frequency, Nd:YAG are widely used in scientific research, medical, industrial and military lasers.
Property of Nd:YAG laser
| Nd Dopant Concentration | Nd: 0.3-1.1at% |
| Orientation | <111> within±5° |
| Size | Rods: Diameter（3-30）mm, length≤ 300mm; Slabs: （3-50）mm*（3-8）mm*（30-200）mm; |
| Interference Fringe | ≤1/8λ/inch@632.8n |
| Extinction Ratio | ≥28db |
| Dimensional Tolerance | Diameter: 0/-0.05mm,Length: +/-0.5mm |
| Ends parallel Parallelism | ≤ 10″ |
| Perpendicularity to rod axis | ≤ 5′ |
| Flatness | ≤λ/10 @632.8nm |
| Surface Quality | 10-5 (MIL-O-13830A) |
| Chamfer | 0.1±0.05mm*45° |
| Coating | AR-Coating Coating Reflectivity: R≤0.2%@1064nm, HR- Coating Coating Reflectivity: R>99.8%@1064nm and T>95%@808nm |
| Damage Threshold | ≥800MW/cm2 |
