INTRODUCTION

Collimated Beam Shaper Module is Holo/Or’s tailored solution for applications requiring an extended working distance range or a long depth of focus. The Collimated flat top is the natural complement for our more standard flat top beam shaper element which gives a uniform-intensity beam at a unique specified working distance. With a Collimated Beam Shaper Module, the uniform-intensity beam is maintained with high fidelity, power uniformity, and constant size/shape over an extended working distance range. The shape is well-defined with sharp edges, and it can be round, square, rectangular, elliptical, line or any other dimension suiting the user.

SINGLE MODE INPUT

For single mode input sources, the Collimated Top-Hat will be a good solution for applications such as industrial surface treatment where the working surface can be located at widely varying distances from the laser delivery system. This ensures that the processing will be even and smooth with a clean edge at any working distance suiting the user’s convenience, in the specified range.

HOLO/OR offers a novel single element collimated beam shaper – the Top Hat Cube . This novel 25mm cube element can shape any 3mm input beam into a collimated square or round top hat beam.

Specifications of Collimated Top-Hat Singlet element

Physical characteristics
MaterialFused Silica
dimensions [mm]25x25x25
Input parameters
Wavelength range [nm]320-2000
Input beam diameter [mm]13
M2<1.5
Output parameters
ShapeSquareRound
Size [mm]13x33mm diameter
Efficiency>97%
Collimation propertiesCollimated shape at exit along 300 [mm] range

MULTI MODE INPUT

For multi-mode sources, the Collimated Homogenizer Module is HOLO/OR’s tailored solution for applications requiring a long working distance range. The Collimated Homogenizer is the obvious supplement to our standard diffractive homogenizers which give a shaped intensity beam at a unique specified working distance. The Collimated Homogenizer is a good solution for applications such as industrial surface treatment where the working surface is uneven or located at varying distances from the laser delivery system.

Typical applications:

  • Aesthetic skin treatment
  • Laser welding of polymers
  • Surface treatment
  • Laser cleaning
  • Laser hardening
  • Color ablation/Paint removal
  • Coating removal

Key Advantages of the module

  • Affordable
  • Easy installation and
  • system integration
  • Not sensitive to incident
  • beam parameters
  • Easy customization

Figure 1: 3D animation of module with output propogation on optical axis.

Product list

Wavelength[nm]Output shape[mm]Output size[mm]Data Sheet
Col_RD-001-Q532Round7.8DATA SHEET
Col_HM-001-I1064Square13.2x13.2DATE SHEET

Data sheet example for standard products: 

Optical propertiesValue
Wavelength1064 nm
Incident beam size<3 mm*
Glass material: DOE/LensFused Silica/ BK7
Collimation length> 200 mm
Output ShapeRound/Square/Line
Output Size??x?? mm
CoatingAR/ AR ( specific type of coating)
Optomechanical propertiesAR/ AR ( specific type of coating)
Module length92.7 mm
External Diameter30.5 mm

*Smaller beam has better effect on collimation length and shape contrast
**For highly coherent laser beam, speckles will appear

Application idea: Fiber coupled Collimated Homogenizer

The module can be integrated into fiber laser delivery systems by direct connection via fiber collimator. Preferable to use a fiber collimator with a small output beam size (<2 mm). Standard fiber adaptors can be used for fiber interface.

Figure 2: Schematic sketch of the module with fiber

Application idea: Collimated Line Homogenizer

Collimated line intensity is needed for many optical applications, for example:

  • Laser cleaning
  • Laser inspection
  • Ablation
  • Surface modification
  • Debonding
  • Laser 3D scanning

Typically, there is a specific requirement for line length and width; therefore, for prototyping, we suggest a custom solution for a line shape module based on catalogues’ opto-mechanical parts, and for industrial purposes we suggest a custom opto-mechanical solution. 

Collimated Line Homogenizer can also be combined with a fiber interface.

Figure 3: Optical sketch for Collimated Homogenizer Line system

Contact Us for more information or for custom solution.