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Anamorphic beam-shaping optics 5AN

Transforms a collimated laser beam with elliptical cross section into a circular beam or vice versa

5AN-1.6
5AN-1.6
5AN-2-V
5AN-2-V
5AN-2.5
5AN-2.5
5AN-3
5AN-3
Representative product images. Individual product images are found on the individual product pages.

Features

Anamorphic optics act one-dimensionally on the elliptical profile of the colli­mated beam.
  • Radially symmetric output beam achieved by down scaling of the longer ­elliptical axis (beam-shaping factor 0.33 – 0.63)
  • Integrated astigmatism correction
  • No lateral beam shift or beam deviation as with anamorphic prism pairs
  • Various optics UV-IR
  • Clear aperture: 6.5 mm
  • Diffraction-limited optics pair
  • Ø 19.5 mm system mount: Full integration with ­­­multi­cubeTM system / 30 mm cage system, collimators and adapters


Description

A circular beam profile may be preferred over the elliptical profile usually provided by laser diodes or by tapered amplifiers. Anamorphic optics act one-dimensionally on the elliptical profile of the colli­mated beam. They can be used to 

  • Adjust the larger beam diameter to the dimension of the smaller one, producing a radially symmetric beam 
  • Adjust the smaller beam diameter to the dimension of the larger one, producing a radially symmetric beam 
  • Transform a circular beam into an elliptical one 
  • Enlarge one elliptical axis to produce a beam with a higher axis ratio

The Anamorphic Beam-shaping ­Optics type 5AN are cylinder lens systems and, therefore, can be additionally used to correct the astigmatic difference ∆As of the laser diode or tapered amplifier through a refocusing of the optical system. Coupling efficiencies to single-mode fibers of 80% or more are possible when using anamorphic beam-shaping optics (depending on the beam characteristics of the laser diode or tapered amplifier).

Form Factor
The anamorphic effect is described by the form factor F, which ­indicates the relative diameter change of the parallel beam.
The target value is calculated from the ratio of the beam diameters Ø⊥ and Ø|| of the ­collimated beam.

Schema Anamorphot