pk10开奖记录 Er:YAG

Er:YAG is an excellent laser crystal which lases at 2940 nm. This wavelength is the most readily absorbed into water and hydroxylapatite of all existing wavelengths and is considered a highly surface cutting laser. It has wide applications in medical applications, such as dental (hard tissues), orthopedics, etc.

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Advantages of Er:YAG Crystal:

      •   High slope efficiency;    
      •   Operate well at room temperature;   
      •   Operate in a relatively eye-safe wavelength range.


Material and Specifications

Dopant concentration

Er: ~50 at%

Wavefront Distortion


Extinction Ratio

≥25 dB

Rod Sizes

Diameter:3~6mm, Length:50~120 mm    

Upon request of customer         

Dimensional Tolerances

Length: ± 0.02" 

Barrel Finish        

Ground Finish: 400# Grit







Surface Quality

10/5 (MIL-PRF-13830B)


0.006"±0.002" at 45°± 5°

AR Coating Reflectivity

≤ 0.25% (@2940nm)



Optical and Spectral Properties of Er:YAG Crystal

Laser Transition

4 I 11/2  to  4 I 13/2

Laser Wavelength


Photon Energy

6.75×10-20 J(@2940nm)                              

Emission Cross Section         

3×10-20 cm2

Index of Refraction

1.79 @2940nm

Pump Bands

600~800 nm


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