OPTICS CRYSTALS LASERS
   
 
Material Fused Silica KI

Optical Grade Fused Quartz (KI)

Fused silica is the glassy form of quartz and is thus isotropic. It is tough and hard and has a very low expansion. Normal varieties contain water which gives strong absorption in the IR. Water-free varieties are available.











BASE PROPERTIES

PARAMETER VALUE
OPTICAL  
  Refractive Index   nF (486nm) = 1.4631; nd (588nm) = 1.4585; nC (656nm) = 1.4564  
  Birefringence Constant   3.54 nm/cm3  
  Reflection Loss   for two surfaces at 400nm - 7.1%; at 588nm - 6.8%;  
  Abbe Constant   67.8  
  Bubbles/inclusions   None  
PHYSICAL  
  Density   2.201 g/cm2  
  Softening Point   1600 °C  
  Strain Point   1025 °C  
  Annealing Point   1120 °C  
  Max. Service Temperature   950 °C (continuous) 1200В° C (limited time)  
  Coefficient of Expansion   0.55 x 10-6/°C  
  Knoop Hardness   500 kg/mm2  
  Young's Modulus   73 GPa at 25°C  
  Shear Modulus   31 GPa at 25°C  
  Bulk Modulus   36.9 GPa at 25°C  
  Poisson Ratio   0.17 at 25°C  
  Rupture Modulus   50 MPa at 25°C  
  Tensile Strength   50 MPa    
  Compressive Strength   1.1 GPa  
  Dielectric Strength   250-400 kV/cm at 20°C    
CHEMICAL  
  Molecular Weight   28.09  
  Class/Structure   Amorphous glass  
  Chemical Stability   High resistance to water and acids (except hydrofluoric).  
  Impurity Content   Total metallic impurities: less than 0.3 ppm  
  OH- Content   < 0.2 ppm  
  Bubbles/inclusions   None  

REFRACTIVE INDEX

  Wavelength, µm 0.2 0.22 0.25 0.3 0.32 0.36 0.4 0.45    
  Refractive Index 1.551 1.528 1.507 1.488 1.483 1.475 1.470 1.466    
  Wavelength, µm 0.5 0.55 0.59 0.60 0.65 0.7 0.75 0.8 0.85  
  Refractive Index 1.462 1.460 1.458 1.458 1.457 1.455 1.454 1.453 1.452  
  Wavelength, µm 0.9 1.0 1.1 1.2 1.3 1.5 1.6 1.7 1.8  
  Refractive Index 1.452 1.450 1.450 1.448 1.447 1.445 1.443 1.442 1.441  
  Wavelength, µm 1.9 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.37  
  Refractive Index 1.440 1.438 1.435 1.431 1.428 1.424 1.419 1.414 1.410  



 
 
 
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Bi-Convex Lenses
Bi-Concave Lenses
Meniscus
Cylinder Lenses
Right Angle Prisms
Dispersion Prisms


Fused Silica Concave Mirror and Porro Prisms

Fused Silica Cylindrical plano-convex lenses

Fused Silica light guides


Ordering Info

 
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