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Website>Product>>YAG laser assembly>YAG rods     
 

YAG rods

In all laser equipment laser rod acts as a very important role. Whether in industrial, medical laser equipment or military laser equipment. Laser rods Play a very important role.
Nd: YAG is cubic crystal, it is isotropic crystal. Nd: YAG is a four-level system, high quantum efficiency, broad stimulated emission area, so the threshold is much lower than ruby and neodymium glass. Also, because the Nd: YAG crystal has excellent thermal properties, it is ideal crystal for continuous and heavy-frequency devices. Nd: YAG crystal is able to work continuously at room temperature, the only solid working substances in low and medium-power pulse devices, the current application of Nd: YAG is much more broader than any other substances.
Nd:YAG ROD is the most mature and widely used as solid-state laser material, adopted by R&D, medical, industrial and military customers. Its main and obvious advantages are: high gain, low threshold, high efficiency, low loss at 1.064 μm, as well as high optical quality, good thermal conductivity and thermal shock characteristics, stable chemical and mechanical properties, which make Nd: YAG as the most suitable and commercial laser material for various modes of operation (CW, pulsed, Q-switched, mode locked and cavity dumped).

     Parameter:

Dopant concentration, at.% 0.5-1.2 at%
orientation: <111> ± 5° or <100> ± 5°
Flatness: < λ/10(@632.8nm)
Parallelism : ≤ 10"
Perpendicularity : ≤ 5 ′
Used for: 1064nm pulse/CW solid lasers
Optical Quality:  Interference fringes ≤ 0. 25 λ /inch
 Extinction ration Ф3-Ф6.35 ≥ 28dB
 Ф7-Ф10 ≥ 25dB
Dimensional tolerances :  Diameter: ±0.05mm
Length: ±0.5mm
Chamfer : 0.07+0.005/-0.00" at 45°
AR Coating Reflectivity : ≤ 0.2% (@1064nm)
HR-Coating Reflectivity: >99.8%@1064nm and R<5%@808nm
Parameters of lasers: Point efficiency of long pulse:3.3%(lamp pumped,20j input), slope efficiency of long pulse 4.2%
 
Dimension:

The most commonly used size of the ND: YAG laser rod diameter Is from1.5mm to 18.0mm, 0.5mm up by ladder. Length size from 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 70mm to 200mm. we can use diameter and length as a combination of the size.

Here is the most common size of Nd:yag rods:

Part number

Diameter(mm)

Length(mm) State of product Applied machine
Rod-D3-L50

3

50    
Rod-D3-L60

3

60    
Rod-D3-L110

3

110    
Rod-D3-L120

3

120 Always have stock Laser making machine
Rod-D4-L50

4

50    
Rod-D4-L60 4 60    
Rod-D4-L120

4

120 Always have stock Laser making machine
Rod-D4-L130 4 130 Always have stock Laser making machine
Rod-D5-L110 5 110    
Rod-D5-L120 5 120 Always have stock Laser making machine
Rod-D5-L140 5 140    
Rod-D6-L110 6 110    
Rod-D6-L150 6 150    
Rod-D8-L147 8 147 Always have stock Laser making machine
Rod-D8-L180 8 180    
 
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