Nd:YAG Rods

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.[1] It is the neodymium ion which provides the lasing activity in the crystal, in the same fashion as red chromium ion in ruby lasers.

Material: Nd(Ce)YAG Cr:YAG
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

Capabilities of YAG crystal VY Optoelectronics Co.,Ltd can produce
•  Rod size:  3- 30mm in diameter and 1 - 300mm in length;
   Slabs: (3-50)mm Length *(3-8)mm Width *(30-200)mm Height
•  Nd dopant concentration : 0.3% - 1.1%;
•  Polishing;
•  AR-coating or/and dichroic coating;
 

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

Nd:YAG rods video display
 
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 

掺杂浓度 Nd Dopant Concentration 

 Nd: 0.3-1.1at%   

晶向 Orientation 

 <111> within±5°

产品尺寸 Size

 Rods: Diameter(3-30)mm, length≤ 300mm; 
 Slabs: (3-50)mm*(3-8)mm*(30-200)mm;   Also customized according to customer requirements

干涉条纹 Interference Fringe 

 ≤1/8λ/inch@632.8nm

消光比  Extinction Ratio

 ≥28db

尺寸公差 Dimensional Tolerance  

 直径:0/-0.05mm, 长度: +/-0.5mm,  Diameter: 0/-0.05mm,Length: +/-0.5mm

平行度  Ends parallel  Parallelism

 ≤ 10"

垂直度  Perpendicularity to rod axis 

 ≤ 5′

平面度  Flatness

 ≤λ/10 @632.8nm

光洁度  Surface Quality 

 10-5 (MIL-O-13830A)

倒角 Chamfer  

 0.1±0.05mm*45°

镀膜 Coating

 AR-Coating Coating Reflectivity:   R≤0.2%@1064nm, 
 HR- Coating Coating Reflectivity:  R>99.8%@1064nm and T>95%@808nm

膜层抗激光损伤阈值  Damage  Threshold    

 ≥800MW/cm2

 

VY Optoelectronics Co.,Ltd. can also produce YAG single crystal products, CTH: YAGEr:YAGHo:YAG, Yb:YAG, Undoped YAG and so on, with the maximal diameter of 4-6 inches, as well large-size magneto-optical single crystal TGG and TSAG . We can provide the various special crystal rods, large-size and high-concentration laser crystal slab, crystal substrates, and other special products under the requirements of the customers.

 

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