Beam shaping Christian Bischoff 29. April 2025
Your application at a glance
TOPAG thinks beam shaping from the light source to the application.

Our approach covers the entire chain – from the laser source to the beam path and optimum adaptation to your application, taking into account the manufacturing options. This holistic approach allows us to combine efficiency, precision and functionality in a targeted manner – for example in micromachining, spectroscopy, imaging or sensor technology.

Material_processing

NIR - DUV

Wide wavelength range

cw to fs

for the highest demands

Standard optics

ex stock

customized

customized & cost-efficient

Advantages of laser beam shaping

Improve measurement and processing results

Process-adapted beam profiles enable, among other things, improved ablation or a better signal-to-noise ratio.

Parallelization enables you to speed up processes

You can increase your process efficiency with easily integrated diffractive beam splitters

Reduce the costs of your measurement or manufacturing process

Parallelization, improved removal and much more enable you to reduce overall costs.

It connects you to new, innovative applications

Many innovative and modern applications in laser processing and measurement technology would not have been possible without beam shaping.

Your path to optimal beam shaping
Special features of beam shaping
1
Changed propagation behavior
2
Correct selection depending on the laser profile
3
Handling depends on the type of beam shaping
4
Type of integration depends on beam shaping concept

Consultation for optimal beam shaping

With TOPAG for optimum beam shaping for your setup
Our plan
1
Capture task & framework conditions

We clarify your requirements together - from processes to technical limits. We take into account the beam source, beam path and production conditions.

2
Evaluation of the possible options

We examine suitable concepts along the entire beam path. The criteria are efficiency, feasibility and integration.

3
Clear recommendation for action

You receive a specific recommendation for your optimized setup. Functional, practicable and application-oriented.

TOPAG_Beam Shaping_Plan
Applications
Consistent energy, consistent result

Beam shaping improves precision and repeatability in laser material processing. A homogeneous top-hat profile distributes the energy evenly, prevents overheating and reduces melting edges. This results in clean cuts, fewer rejects and higher process quality – ideal for demanding applications.

Homogeneous light
for precise insights

The illumination of the sample is decisive for the quality of the image. Top Hat beam shapers can be used to create homogeneous brightness across the entire image field and therefore the best possible conditions for good contrasts and high dynamics.

Precision light for modulators

Display systems such as Spatial Light Modulators(SLMs) enable flexible adjustment of the beam profiles. An upstream top-hat beam shaper ensures a homogeneous distribution of the laser power over the entire active surface of the display, allowing the maximum laser power to be used and improving the image quality.

Applications

Guide for optimal beam shaping

Our standard optics

Top-Hat beam shaping optics for homogenization
Focus on precision - homogeneous energy, optimum effect

Thanks to homogeneous energy distribution over the entire beam surface, Top Hat profiles provide an optimum basis for a wide range of laser processes and measurement tasks. Thanks to diffractive and refractive technologies, different beam shapes with different sizes can be realized depending on the requirements – with just one optical element.

Square

Top hat size: 10 – 100µm

Square

Top hat size: >100µm

Rectangular

Top hat size: >100µm

Round

Top hat size: 10 – 100µm

Round

Top hat size: >100µm

Line

Top hat size: 10 – 100µm

Line

Top hat size: >100µm

Homogeneous intensity, homogeneous phase.

Special applications require large depth of field or homogeneous phase fronts, together with a constant intensity distribution over the entire beam area. Based on our focus beam shapers, we enable almost any top-hat profile with flat phase and long propagation paths. For efficient energy distribution and highest precision, trust TOPAG for reliable beam shaping without compromise.

Form follows function

In the years since our first focus beamformer, we have been given a variety of targets for a wide range of functions. From simple “Gaussian to donut” beamformers to long lines, triangular profiles or rhombuses. With our diffractive and refractive methods, we can also create the best adapted shape for your special application.

Beam splitter optics for parallelization
Efficiency in series

Diffractive beam splitters divide the input beam into two or more output beams. Processes can therefore be easily parallelized with a single optical element. The individual output beams have the same beam parameters as the input beam and, depending on the model, deviate at an angle of 100 µrad to 10°.

two partial beams

DBS1x2

  • Efficiency: >80%
  • Homogeneity: >98%
  • Higher orders: <5%

three partial beams

DBS1x3

  • Efficiency: >84%
  • Homogeneity: >95%
  • Higher orders: <3.5%

five partial beams

DBS1x5

  • Efficiency: >71%
  • Homogeneity: >95%
  • Higher orders: <2%

six partial beams

DBS1x6

  • Efficiency: >80%
  • Homogeneity: >98%
  • Higher orders: <1%

seven partial beams

DBS1x7

  • Efficiency: >74%
  • Homogeneity: >95%
  • Higher orders: <1.1%

eight partial beams

DBS1x8

  • Efficiency: >70%
  • Homogeneity: >97.5%
  • Higher orders: <1%

nine partial beams

DBS1x9

  • Efficiency: >73%
  • Homogeneity: >95%
  • Higher orders: <1%
More spots. More speed.

With two-dimensional beam splitting, an entire grid of output beams with the same energy is generated quickly and easily from an input beam. With a single optical element, processes can therefore be highly parallelized and the laser power efficiently distributed.
Each individual beam has thesame diameter, the same divergence and the same beam quality as the input beam.

2×2 partial beams

DBS1x2

  • Efficiency: >66%
  • Homogeneity: >98%
  • Higher orders: <2.5%

3×3 partial beams

DBS1x3

  • Efficiency: >73%
  • Homogeneity: >95%
  • Higher orders: <1.5%

3×5 partial beams

DBS1x5

  • Efficiency: >75%
  • Homogeneity: >95%
  • Higher orders: <1%

4×4 partial beams

DBS1x2

  • Efficiency: >74%
  • Homogeneity: >97%
  • Higher orders: <0.5%

5×5 partial beams

DBS1x3

  • Efficiency: >74%
  • Homogeneity: >95%
  • Higher orders: <0.5%

8×8 partial beams

DBS1x5

  • Efficiency: >75%
  • Homogeneity: >90%
  • Higher orders: <0.1%
Now it's time to go round

Spot arrays with point-symmetrical distribution increase the efficiency of many processing machines through parallel processing. At the same time, the raster enables consistent processing parameters regardless of the scanning direction and orientation of the workpiece.

Punk cross

DBS-5/4

  • Efficiency: >72%
  • Homogeneity: >95%
  • Higher orders: <2%

Hexagon

DBS-7/6

  • Efficiency: >75%
  • Homogeneity: >95%
  • Higher orders: <1%

Dot square

DBS-8/4

  • Efficiency: >70%
  • Homogeneity: >97%
  • Higher orders: <1%
Matrix of possibilities

With our customized beam splitters, you can design individual spot arrangements entirely according to your requirements:
Uniform grids, individual power distributions between the spots and combination with top hat or donut beam shapers. The control is yours

Beam Sampler
Keeping an eye on performance

Similar to 1D beam splitters, the beam sampler splits the input beam into several output beams. As the split beams only contain a few parts per thousand of the power, the laser process can be continued without significant losses and the power can be controlled on-line at the same time

Customized design
Your solution that can do more - and reduces follow-up costs

A custom-fit beam shaping system opens up possibilities that are often denied with conventional optics. Not only better process results, higher efficiency and shorter processing times are a valuable benefit in every application. Planned from the outset, a customized system also saves follow-up costs for optics, beam expanders and the adjustment effort, which should not be underestimated.