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Er YAG

Er YAG

Erbium-doped Yttrium Aluminum Garnet (Er:YAG) is a pale green crystal with various output wavelength. Typically, highly doped Er:YAG, about 50% Yttrium atoms replaced by Erbium, is used as laser medium for 2940 nm wavelength. Due to the strong water and human body fluid absorption at this wavelength. Er:YAG laser has a wide dental and medical applications.

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Product Details

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1.Works in a relatively eye-safe wavelength region

2.High slope efficiency

3.Good optical quality

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2.94μm laser used in Medical Cosmetology

image.png   Penetrating keratoplasty

   ●Glaucoma surgery
   ●Vitreoretinal surgery
   ●Cataract surgery


Other applications:

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Dental laser therapy apparatus


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Er YAG Laser therapeutic apparatus


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Skin laser therapy apparatus

》More information about Er YAG Laser: Wikipedia


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Low bulk absorption

High Purity raw materials >99.999%

Low bulk absorption

Advanced raw material pre-sintering process

Advanced raw material pre-sintering process

No poly-crystalline defects


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① Full automatic controlled crystal growth furnace High yield

② Advanced CZ Method Crystalline Process Stable quality control

③ Systematic batch packing classification

》More information about Equipments


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Maximum boule size >dia50mm

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Anealing Improve the laser efficiency

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High doping concentration gradient homogeneity , typical value<0.02cm-1/inch

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No bubbles, scatering point and inclusions in crystals


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No grain boundary in crystals



》More information about Crystal Growth


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High level dust-free clean room 

(1000) grade)


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2-sides polishing equipments


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AFM


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Interferometer

Advance CMP process, Ra<0.4nm          

Surface quality: >10/5           

Flatness: <λ/8@632 nm

》More information about Polishing


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ZPCL1H3%D0QF71F_F5AW5GM.png       Customized coating service 

     S1,S2:AR/AR@2940nm<0.25%

     S1,AR@2940nm,HR@2940nm

     S1,AR@2940nm

》More information about Coating


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PropertyValue
Chemical formulaEr3+:Y3Al5O12
Crystal structurecubic - la3d
Lattice parameters12.01Å
Density4.56-5.11 g/cm3
Melting Point1950°C
Refractive Index1.7838@2940 nm
Thermal Conductivity/(W·cm-1·K-1@25°C)0.14W
Thermal Expansion /(10-6 /°C@25°C )7.8
Specific Heat/ (J·g-1·K-1)0.59
Hardness (Mohs)8.5
Young`s Modulus /GPa317
Shear Modulus / GPa54.66
Extinction Ratio / dB30
Orientation[100] or [111] < ±0.5°
Poisson Ratio0.25

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PropertyValue
Concentrations50 at.% (highly doped);
(0.1~1) at.% (low doped)
Laser transition4I11/2 → 4I13/2 (highly doped)
4I13/2 → 4I15/2 (low doped
Emission wavelength2940 nm (highly doped)
1645 nm (low doped)
Pump wavelength600~800 nm (highly doped)
1530 nm (low doped)
Fluorescence lifetime0.23 ms (highly doped)
2~5 ms (low doped)
laser transition peak cross section, l (E-20 cm2)3
Coatings< 0.25% @ 2940 nm

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PropertyValue
Orientation< 0.5°
Thickness/Diameter±0.05 mm
Surface Flatness<λ/8@632 nm
Wavefront Distortion<λ/4@632 nm
Surface Quality10/5
Parallel10〞
Perpendicular
Clear Aperture>90%

send inquiry.png If you want to get more information send us you message


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History: 

Metalaser has engaged in crystal industry over 20 years which is one section    of Shanghai Daheng Optics and Fine Mechanics Co., Ltd held by SIOM. 

Team:     

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More than 60% of our employees are physics or material scientists from NIALT and SIOM.





》More information about our company

Alibaba Transaction History:

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We have set up a mall on the Alibaba, and there are many transaction record from all over the world.    

》Our Alibaba trade website

           

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Delivery in 3~4weeks

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Free samples can be provided

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Free ex change goods or sales return for once 

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Provides re-polished and coating

services (Coating damage only)

Note:Postage paid by the buyer


》More information about Service


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