TGG Faraday Crystals

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Product Details

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1.Low optical loss(<0.1%/cm)

2.High Verdet constant(~-40rad/T/m)

3.High thermal conductance (7.4W /m/K)    

4. Laser damage threshold (>1GW/c㎡)


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The faraday device made of TGG crystal used in high-power laser and optical fiber system


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Ytterbium Fiber Laser


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Nd YAG laser


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Raman Fiber amplifier module

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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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Absorption coefficient 0.0015cm-1

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Tb4+ concentration increased by post-annealing process,high verdet constant

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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 Equipments


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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/10

》More information about Equipments


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       Customized coating service 

     S1,S2:AR/AR@1064nm ≦ 0.2%

     S1,AR@1064nm

     S1,AR@1064nm


》More information about Equipments


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PropertyValue
Chemical FormulaTb3Ga5O12
Lattice Parametera=12.355Å
Density7.13g/cm3
Mohs Hardness8
Melting Point1725°C
Refractive Index1.954 at 1064 nm
Thermal Conductivity7.4 W cm-1 K-1

Verdet Constant, V:
@1064 nm

@ 632 nm


-40 radT-1m-1

-134 radT-1m-1

Nonlinear Index, n8
Figure of Merit(1), V/α27
Figure of Merit(2), V/n25
Growth MethodCzocralski

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PropertyValue
Orientation[111] within ±15 arc min
Wave Front Distortion< 1/8 wave
Extinction Ratio> 30dB
Diameter+0.00mm/-0.05mm
Length+0.2mm/-0.2mm
Chamfer0.10mm @ 45°
Flatness< 1/10 wave at 633nm
Parallelism< 30 arc Seconds
Perpendicularity< 5 arc min
Surface Quality10/5 Scratch/Dig


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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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