Polarizing Beamsplitter Cubes

Strahlteilerwürfel/Drawing(1k)

Two right angle prisms made of flint glass are cemented together to form a cube.
The dielectric beamsplitter coating provides a transmission of more than 95% for the component polarized parallel to the plane of incidence in the respective wavelength range. Less than 0.1% of radiation polarized vertically to the plane of incidence is contained in the transmitted light. This results in an extinction ratio of 1:1000 for the transmitted beam. The extinction ratio in reflection is smaller than 1:20.
The surface accuracies of the right angle prisms are λ/10; the deformation of a transmitted wave is dependent of the homogeneity of the glass and often meets the quality of the surfaces. The deviation of a transmitted beam is less than 2' (smaller then 10' for size 5 mm).
The outer faces of the cubes are multilayer antireflection coated; minimum residual reflectance approx. 0.3% per surface.

Size Wavelength Ranges 440 - 650 nm
Ordernr. Price 1 pc. Price 2-5 pc. Price 6-10 pc.
  5 mm
10 mm
15 mm
20 mm
25 mm
30 mm
40 mm
PTW 05
PTW 10
PTW 15
PTW 20
PTW 25
PTW 30
PTW 40
€ 188
€ 188
€ 263
€ 427
€ 471
€ 751
€ 896
€ 171
€ 171
€ 250
€ 403
€ 441
€ 713
€ 850
€ 150
€ 150
€ 234
€ 373
€ 407
€ 669
€ 797
Size Wavelength Ranges 600 - 900 nm
Ordernr. Price 1 pc. Price 2-5 pc. Price 6-10 pc.
  5 mm
10 mm
15 mm
20 mm
25 mm
30 mm
40 mm
PTW 1.05
PTW 1.10
PTW 1.15
PTW 1.20
PTW 1.25
PTW 1.30
PTW 1.40
€ 188
€ 188
€ 263
€ 427
€ 471
€ 751
€ 896
€ 171
€ 171
€ 250
€ 403
€ 441
€ 713
€ 850
€ 150
€ 150
€ 234
€ 373
€ 407
€ 669
€ 797
Size Wavelength Ranges 800 - 1100 nm
Ordernr. Price 1 pc. Price 2-5 pc. Price 6-10 pc.
10 mm
15 mm
20 mm
25 mm
30 mm
40 mm
PTW 2.10
PTW 2.15
PTW 2.20
PTW 2.25
PTW 2.30
PTW 2.40
€ 188
€ 263
€ 427
€ 471
€ 751
€ 896
€ 171
€ 250
€ 403
€ 441
€ 713
€ 850
€ 150
€ 234
€ 373
€ 407
€ 669
€ 797

Holdersto top

Cylindrical mounts are available for beamsplitters of sizes between 10 mm and 25 mm.

dimension outer diameter holder
Ordernr. Price 1-5 pc. Price 6-10 pc.
10 mm
15 mm
20 mm
25 mm
25 mm
25 mm
35 mm
40 mm
MTW 10
MTW 15
MTW 20
MTW 25
€ 87
€ 87
€ 99
€ 119
€ 78
€ 78
€ 90
€ 108

Available on special orderto top

  • Other wavelength ranges or single wavelengths → on request
  • Cubes made from glass with refractive index matching that of the cement. Hereby reflections between glass and cement (which might introduce disturbing interferences) are avoided → on request
  • Cubes assembled without cement (cube pairs in optical contact) → on request
  • Other geometries - i.e., for two parallel emerging beams or multiple beamsplitting combinations. → on request
  • According to your demands λ/4 or λ/2 retardation plates for influencing the polarization can be cemented on the exit face. → on request
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