Discover plug and play laser beam expansion


A unique system made of aspheric lenses

Conventional beam expansion systems can only be adapted with great effort, are relatively large and only suitable for a certain wavelength. The world’s first use of an aspheric lens for beam expansion opens completely new possibilities.

Spherical aberrations are corrected and an afocal system for large input beam diameters is realized. The aspheric optic reduces the system size up to 50% compared to currently available optical components on the market. The asphericon system covers a wide wavelength spectrum. Design wavelengths of 355, 532, 632 and 780 to 1064 nm and magnification’s of (1.5, 1.75, 2.0) are standard, which can achieve an expansion up to 32x.

a|BeamExpanders work – thanks to an aspheric lens – completely diffraction limited, both as a single element and in cascades with up to five additional coated elements. An intelligent assembly concept saves time-consuming adjustments and ensures precision and flexibility. Discover the advantages of aspherical beam expansion for your application!

Use our configurator to quickly and easily scan for the desired expansion and/or the number of a|BeamExpanders and match the calculated results with your own requirements.



Precise expansion and shaping of laser beams – asphericon BeamTuning

In addition to the aspheric beam expanders (a|BeamExpander) for expanding and reducing lasers, asphericon has developed further optical modules within the BeamTuning line. The product range includes a fiber collimator for FC/PC laser patch fibers (a|AspheriColl), an element for using a|BeamExpanders outside their design wavelength (a|Waveλdapt), intra- and cross-system adapters (a|Adapters),and mounted aspherical optics (MountedOptics).

Supplementary – also based on an aspheric optic – we offer beam shapers for a wide range of applications. Learn more about shaping a collimated laser beam into a Top-Hat beam and/or different focused beam profiles at the aspheric beam shaping optics site.

Plug & Play – All Beam expansion and fiber coupling elements can conveniently be combined in an a|BeamBox according to your specifications. Choose your individual a|BeamBox e.g., for laboratory or metrology applications. Any combination is possible.

Order now or ask our experts for detailed advice on your specific laser application!

asphericon’s beam expansion und fiber coupling optics at a glance



  • Design wavelengths [nm]: 355, 532, 632, 780, 1064
  • Max. Input aperture: 10.6 – 14.7 mm, max. Output aperture: 22.5 mm
  • Expansion: up to 32x (230 intermediate stages possible)
  • Quality: Diffraction-limited wavefront
  • Easy assembly of components through metric fine thread

Beam Expander
BeamTuning brochure
Info sheet a|BeamExpander UV


  • Using a|BeamExpanders outside their design wavelength
  • Adjustment to all wavelengths [from 500 nm to 1600 nm]
  • Diffraction limited performance with up to five combined a|BeamExpanders
  • Compensation of divergent incoming beams up to 1 mrad


BeamTuning brochure


  • Intra-system adapter for easy integration of BeamTuning elements
  • Cross-system adapter (C-Mount, SM1, 1.2″ circumference) for compatibility with all optical systems (e.g. Qioptiq, Edmund Optics, Owis)

Beam Expander Adapter
BeamTuning brochure


  • Flexible choice of output beam diameter in combination with a|BeamExpanders
  • Easy mounting to a|BeamExpanders via metric fine thread
  • Perfectly aligned lateral position
  • FC/PC fiber connector for diffraction limited quality
  • Optimized for wavelength range (500 nm – 1600 nm)

BeamTuning brochure

a|BeamBox Essential

  • Combines up to eight a|BeamExpanders with an a|AspheriColl, a|Waveλdapt and matching a|Adapters
  • Optimized for wavelengths 355, 532, 632, 780 and 1064 nm
  • Quality: diffraction-limited wavefront
  • Multi element sets with attractive cost savings

BeamBox Essential
BeamTuning brochure

a|BeamBox YourChoice

Combine a|BeamExpander, a|Waveλdapt, a|TopShape, a|AiryShape and a|AspheriColl with a|Adapters (intra-system and cross-system) and MountedOptics individually to suit your requirements. Almost every combination is possible! Please contact us.


BeamTuning brochure

More about asphericons mounted lenses can be found at the MountedOptics product site.