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CEO
Tadas Lipinskas +370 5 219 4884
BGO crystals
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BGO crystals

Main features

 

  • High electro-optic coefficient (r41= 3,5 pm/V)
  • Low dark conductivity
  • Large size elements or wafers up to 3" 

 

Application examples

 

  • Spatial light modulators
  • Optical switches
  • Optical correlators
Request custom
  • Description
  • Properties
  • Specifications

BGO crystals are highly efficient photo conductor with low dark conductivity that allows a build-up of large photo-induced space-charges. These crystals have strong spectral dependence of the photoconductivity and their electro-optic properties (electro-optic coefficient r41: 3,5 pm/V) allow to develop and produce a wide range of optical devices and systems. 

Bi12GeO20 (BGO) crystals have unique combination of different physical properties, that allow to use them in spatial light modulators, optical switches, phase conjugation wave mixers and optical correlators.

By modified Czochralski technique grown crystals could have up to 3" diam aperture in size.

Single crystal Bi12GeO20
Crystal Structure cubic, point group 23
Lattice(Cell) Parameters 10,15 Å 
Transmission Range 0,45-7 µm
Refractive Index @0.63µm 2,55
Electro-Optic Coefficient r41 3,5 pm/V 
Optical Activity @500 nm 41,5 deg/mm
Density 9,2 g/cm3 
Dielectric Constant 40
Dark Resistance 1014 Ohm cm 
Material Bi12GeO20
Clear aperture 85%
Face dimensions tolerance +0/-0,2 mm
Thickness tolerance ±0,2 mm
Parallelism error <30 arcsec
Protective chamfers <0,3 mm at 45°
Coatings Uncoated
Surface quality 40-20 S-D
Wavefront distortion <λ/[email protected],8 nm

 

Order your item
Face dimensions Length Orientation SKU price quantity
5x5 mm
5 mm
[110]
6868
600 €
5x5 mm
5 mm
[100]
6871
600 €
10x10 mm
5 mm
[110]
6872
900 €
10x10 mm
5 mm
[100]
6873
900 €
20x20 mm
1 mm
[110]
6874
540 €
20x20 mm
1 mm
[100]
6875
540 €
30x30 mm
1 mm
[110], Edge is parallel with <001> plane ±2 deg
6876
650 €
30x30 mm
1,5 mm
[110]
6877
650 €