OPTICS CRYSTALS LASERS
   
 
Material Fused Silica (KV)

Full Spectrum Grade Synthetic Fused Silica (KV)

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) = 1.4632; nd (588nm) = 1.4586; nC (656nm) = 1.4565  
  Birefringence Constant   3.61 nm·kg/cm3  
  Index of Absorption   10 x 10-6 cm-1 at 1 microns  
  Refliction Loss   7.0% (L=400 nm, for two surfaces )  
  dn/dT   11.9 х 10-6/К  
  dn/dm = 0   1.3 µm  
  Abbe Constant   67.6  
  Fluorescence   Upon excitation at 242 nm the material displays blue fluorescence.  
PHYSYCAL  
  Density   2.203 g/cm3  
  Thermal Conductivity   1.38 Wm-1K-1  
  Specific Heat Capacity   703 J Kg-1K-1  
  Dielectric Constant   3.91  
  Softening Point   1730° C  
  Strain Point   1075° C  
  Annealing Point   1180° C  
  Max. Service Temperature   1150° C (continuous)
1300° C (limited time)
 
  Coefficient of Expansion   0.55 x 10-6/К  
  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  
  Apparent Elastic Limit   55 MPa  
  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: 25 - 30 ppm  
  ОН- Content   400 - 500 ppm  

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  


 
 
 
Blanks
Plane Parallel Windows
Plano-Convex Lenses
Bi-Convex Lenses
Cylindrical Plano
Wedges
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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