Korth Kristalle GmbH

Refractive Index

 
 

Fused Silica (

SiO2

)

Properties (SiO2)   
Transmission Range (50% of total transmission)  Infrasil: 0,2 - 3,7 µm     Suprasil: 0,16-2,68 µm (thickness 5mm)   
Refractive Index  Infrasil: 1,45711 @633 nm     Suprasil: 1,45702 @633 nm 
Reflective Loss  3,46% @0,633 µm 
Reststrahlen   
Density  2,203 g/cm3 
Melting Point  Infrasil: 1730°C softening temp.      Suprasil: 1600°C  softening temp. 
Molecular Weight  60,08 
Thermal Conductivity  1,38 W/(m·K) @293K  
Heat capacity  Infrasil: 772 J/(kg·K)    Suprasil: 722 J/(kg·K)  
Thermal Expansion  0,51 · 10-6/°C @273-373K  
Hardness (Knoop)  592   
Young´s Modulus E  74 GPa  
Shear Modulus G  31,2 GPa  
Bulk Modulus K  36 GPa  
Rupture Modulus  100 MPa  
Elastic Coefficients  C11 = 77,6; C12 = 15,2; C44 = 31,2 GPa 
Dielectric constant  3,75 @f = 100 MHz, 293K 
Solubility in Water  unsoluble 
Crystal Structure  amorph  
Crystal Type    
Cleavage Planes   
Poisson Ratio  0.17 
Application   Infrasil: IR Optics   Suprasil VUV, UV, VIS Optics 
Remarks   produced by Heraeus Quarzglas, different qualities, improved transmission  

Transmission spectrum

SUPRASIL1 2MM HOMEPAGE ENGL.JPG

Transmission spectrum-2

INFRASIL301 2MM HOMEPAGE ENGL.JPG

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