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Optical constants of CRYSTRAN - Optical materials
SiO2 - Quartz (o)

Wavelength: µm
 (0.1900–5.00)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Conditions

direction: o

Comments

Optically, Crystalline Quartz is used extensively as a wave retardation medium. The birefringent properties of Quartz are of use in quarter-wave plates and in polarisers. Quartz should not be processed or used at temperatures greater than 490 °C. Crystalline quartz is also used for electronic filters and resonators. However, Crystran Ltd. does not deal in material for this application. Quartz is mined naturally, but more commonly produced synthetically in large, long-faceted crystals. Quartz is positive birefringent. Be careful not to confuse terminology in this material, as "Fused Quartz" is often used to denote the glassy non-crystalline form better known as Silica. Normal Quartz is Alpha Quartz and normally RH rotating. LH rotating is available on special order. See our guide on distinguishing the types.At temperatures >490°C, Crystal Quartz starts to revert to glassy state, a process which is complete by 530°C. At this time, as annealling is unlikely, fracture of component is probable.
REFERENCES:
(1)J.V.Atansoff and P.J.Hart, Phys. Rev. Vol.59, pp 85-96 1941
(2)A.W.Lawson, Phys. Rev. Vol 59, pp.838-839, 1941
(3) F.J.Micheli, Ann.Physik 4:7 (1902)
(4) Toyoda & Yabe J. Phys. D: Appl. Phys.,1 6 (1983)

Optical data are for ordinary ray (o).

References

Crystran Ltd. The Crystran handbook of infra-red and ultra-violet optical materials (5th edition, 2023)
See also Crystran Crystal Quartz SiO2 online data sheet

Data

[CSV - comma separated]   [TXT - tab separated]   [Full database record]

Additional information

Properties of SiO2 - Quartz (o)

density:
  - 
    value: 2649
thermal_dispersion:
  - 
    type: constant
    wavelength: 0.633
    direction: para
    value: -5.5E-6
  - 
    type: constant
    wavelength: 0.633
    direction: perp
    value: -6.5E-6
thermal_expansion:
  - 
    direction: para
    temperature: 323
    value: 7.1E-6
  - 
    direction: perp
    temperature: 323
    value: 1.32E-5
hardness:
  - 
    type: Knoop
    indenter_mass: 0.5
    value: 7270000000
melting_point:
  - 
    value: 1983
thermal_conductivity:
  - 
    temperature: 323
    direction: para
    value: 10.7
  - 
    temperature: 323
    direction: perp
    value: 6.2
youngs_modulus:
  - 
    direction: para
    value: 97200000000
  - 
    direction: perp
    value: 76500000000
solubility:
  - 
    value: 0.017