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Beamsplitters

Beamsplitters are used to split or combine beams of light. Plates are used for most laser applications as they exhibit low absorption. Cubes are a convenient, protected form for low power applications. The performance of a beamsplitter is mainly dependent on the coating specifications. For the coating curves for each type of beamsplitter, please refer to Coatings.

Beamsplitters .jpg

 Beamsplitters  Spectrum  Properties

Beamsplitter

 Plate

  Broadband

  Wavelength

  Beamsplitter plates can be used with high power lasers. When using beamsplitter

  plates, it is important to bear in mind that the two partial beams travel different optical

  paths. The optical paths depend on the incident angle and the thickness of the plates.

  Single Wavelength

Beamsplitter

 Cube

         

   Broadband

    Wavelength

   Compared with beamsplitter plates, beamsplitter cubes have the following advantages:
    •     Identical path lengths for both the reflected and the transmitted beams
    •     The transmitted beam is neither displayed nor deflected
    •     Stable and compact
    •     Easy operation

    •     Easy to mount /align

    Single Wavelength

 

Penta

 Beamsplitter

 Cube

Broadband

Wavelength
630-680nm
   T/R: 20%/80% ±5%

   The penta beamsplitter is composed of a penta prism and a wedge. Like the

   beamsplitter cube, it has the following properties:
    •     The transmitted beam is neither displayed nor deflected
    •     Stable and compact
    •     Easy operation

Polarizing

 Beamsplitter

 Cube

Broadband

Wavelength

   The prisms can be used as polarizers, beamsplitters or beam combiners. The output

   beam, which is parallel to the input beam, is called the p-polarized beam while the

   orthogonal output beam is defined as the s-polarized beam.

Single Wavelength




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