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Quartz Crystals

  • Broad transparent spectral range 0.2μm to 3.5μm
  • Good chemical, mechanical and thermal properties
  • Good refractive index properties
  • Applications: waveplates and polarization transform
  • Maximum size: 130x130mm in square and diameter 150mm
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Refractive Index

Wavelength (μm) no ne Wavelength (μm) no ne Wavelength (μm) no
0.1850 1.65751 1.68988 0.9914 1.53514 1.54392 2.3000 1.51561
0.1980 1.65087 1.66394 1.1592 1.53283 1.54152 2.6000 1.50986
0.2310 1.61395 1.62555 1.3070 1.53090 1.53951 3.0000 1.49953
0.3400 1.56747 1.57737 1.3958 1.52977 1.53832 3.5000 1.48451
0.3940 1.55846 1.56805 1.4792 1.52865 1.53716 4.0000 1.46617
0.4340 1.55396 1.56339 1.5414 1.52781 1.53630 4.2000 1.45690
0.5080 1.54822 1.55746 1.6815 1.52583 1.53422 5.0000 1.41700
0.5893 1.54424 1.55335 1.7614 1.52468 1.52468 6.4500 1.27400
0.7680 1.53903 1.54794 1.9457 1.52184 1.53004 7.0000 1.16700
0.8325 1.53773 1.54661 2.0531 1.52005 1.52823

 

Specifications:

Material Quartz Crystal Wavelength 150~4000nm
Size 0.1mm-100mm Surface Quality 10/5 S/D
Optical Axis Orientation <6 arc min Parallelism <1 arc sec
Flatness λ/10 @ 633nm Clear Aperture >95% of full aperture
Coating Upon Customer’s Specification

 

Basic Properties:

Crystal Class Hexagonal Molecular Weight 60.06
Density 2.635-2.660 g/cm3@ 289 K Dielectric Constant for 3x107 Hz @295 K 35 microns
Parallel 4.27 Perpendicular 4.34
Reflection Loss 8.2 % for two surfaces @ 2 mm Melting Temperature 1740 K
Specific Heat 0.17 cal/(g K)@ 273 K Knoop Hardness 741 kg/mm2
Transmission Range 0.4 - 4.5μm Debye Temperature 470 K
Thermal Conductivity Parallel/Perpendicular 720/370 W/(m K) @20K
Parallel/Perpendicular 20/10W/(m K) @194K
Parallel/Perpendicular 10.7/6.2W/(m K) @323K
Parallel 97.2 GPa Perpendicular 76.5 GPa
Bulk Modulus 36.4 GPa Shear Modulus 31.14 GPa
Solubility in Water None Bandgap 8.4

Optical grade quartz crystals has a broad transparent range of 0.2μm to 3.5μm, with high internal crystalline perfection and optical homogeneity. Quartz crystals has excellent mechanical and physical properties, easy to be fabricated, it also has low thermal expansion, high chemical resistance and non deliquesce. And moreover, it exhibits a refractive index difference around 0.009, which makes it widely used in the wave plates and polarization applications. 

Hangzhou Shalom EO offer the optical grade quartz crystals, the quartz crystals ingots, blanks, polished wafers and substrates, the maximum size of 130x130mm square and diameter 150mm are available.  

MgF2 Crystals

MgF2 Crystals

  • Broad transparent spectrum: 0.11~7.5μm
  • Chemically stable.
  • High resistance to mechanical and thermal shock
  • Used for optical prisms, waveplates, lenses and windows
  • Crystals ingot, blanks, polished and coated components available
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