Anamorphic Beam-Shaping Optics 5AN
Transforms a Collimated Laser Beams with Elliptical Cross-section into a Circular beam or Vice Versa
A circular beam profile may be preferred over the elliptical profile usually provided by laser diodes LD or by tapered amplifiers TA. Anamorphic optics act one-dimensionally on the elliptical profile of the colli mated beam and adjust the larger beam diameter to the dimension of the smaller one, producing a radially symmetric beam.
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 LD or TA 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 LD or TA).
• 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 5 mm
• Diffraction-limited optics pair
• Ø 19.5 mm system mount: Full integration with multi cube TM system / 30 mm cage system, collimators and adapters
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 divergences θ⊥ and θ‖ of the laser diode or the beam diameters Ø ⊥and Ø ‖ of the collimated beam.