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Beamsplitters

Beamsplitters are used to split or combine beam of light. The forms are in common use provided by Dream Lasers: plate and cubes. Plates are used for most laser applications as they exhibit low absorption. Cubes are a convenient, protected form for low power applications. Pellicles are very thin membranes which do not produce interference from secondary reflections. The performance of beamsplitters are mainly depended on the coating specifications.

In selecting beamsplitters, the forms, coating, transmission and damage threshold should be considered.

Beamsplitters
Spectrum
Properties
Beamsplitter Plates
Broadband Wavelength Dream Lasers beamsplitter plates can be used with high power laser. When using beamsplitter plates, it is important to bear in mind that the two partial beams travel different optical paths. And the optical paths depend on the incident angle and the thickness of plates.
Single Wavelength
Beamsplitter Cubes
Broadband Wavelength Compared with beamsplitter plate, Dream Lasers's beamsplitter cube has the following advantages:
  • Identical path lengths for both the reflected and the transmitted beams
  • The transmitted beam is neither displaced nor deflected.
  • Stable and compact.
  • Easy operation.
Single Wavelength
Beamsplitter Penta Prisms
Broadband Wavelength

630-680nm

T/R: 20%/80%5%

The penta beamsplitter is composed of a penta prism and a wedge. Like beamsplitter cube, it has following properties too.
  • The transmitted beam is neither displaced nor deflected.
  • Stable and compact.
  • Easy operation.
Polarization Beamsplitter Cubes
Broadband Wavelength

The prisms can be used as polarizers, beamsplitters or beam combiners. The output beam which are parallel to input beam is called p-polarized beam while the orthogonal output beam is defined as s-polarized beam.

Single Wavelength
Please refer to the Glossary and Technology for more information about lenses.

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