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Focal-piShaper 9_xxx Series High efficient laser beam shaping systems for focused beams

With these unique tools the long-standing wish to manipulate the shape of focused beams becomes a reality. With nearly 100% efficiency the Focal-piShaper produces various profiles:

  • Flattop
  • Reverse Gauss
  • Donut
  • Trident

An appropriate optical design provides simple adjustment procedure and lets it easy to integrate the Focal-piShaper in your applications:

  • Photovoltaics
  • Marking and Engraving
  • Drilling
  • Scribing
  • Dicing
  • Material micromachining
  • Printing
  • Microwelding

Technical Specifications

Type Telescope of Galilean type ( without internal focus)
Input beam – TEMoo, Collimated or low divergence
– Diameter < 24 mm
– Optimum 2ω diameter for a Gaussian beam 8.16 mm (1/e2)
Output beam – Collimated or low divergence
– Profile is optimized for Intensity distribution manipulation in focal plane of a diffraction limited lens
– Diameter < 24 mm
Other features – Easy integration to an optical setup and adaptation to a laser source
– Compact design suitable for scientific and industrial applications
– A diffraction limited focusing lens of any type can be applied with the Focal-pShaper
– Easy tolerances for alignment as well as positioning of the Focal-pShaper with respect to a lens
– Capability to work with scanning mirrors
– Applications based on CO2 lasers
Overall dimensions – Diameter 48 mm
– Length 171 mm
Weight 320 g
Mounting – Entrance: External Thread M 27×1 or M 33×1
– Exit:        External Thread M 27×1
Focal-piShaper 12_CO2 features
Model
Focal-piShaper 12_CO2_10.6
Focal-piShaper 12_CO2_9.4
Optimum spectral range
10.5 – 10.7 μm
9.3 – 9.5 μm

Basic principles of Focal-piShaper (or F-piShaper) operation:

  • F- piShaper is a telescopic optical systems that transforms Gaussian or similar Intensity distribution of TEMoo laser beam to a beam providing manipulation of intensity profile in area of Focus of the focusing lens;
  • F- piShaper can be easily (by turning one ring only!) adapted to beams of various diameters, for the F- piShaper_9_xxx optimum 2w diameter range is 4-4.5 mm (1/e2);
  • Low sensitivity to misaligments and beam size variation;
  • The transformation is provided for a certain wavelength range;
  • Optical design without internal focusing of a beam;
  • Any focusing lens could be applied; the only condition is the lens to be diffraction limited one;
  • There are no limitation on applying scanning mirror heads.

Drawings

f_pishaper_9_1064_drawing

Intensity profiles of focused beams under various F-piShaper settings (Courtesy of Altechna)

volt1 volt2
Input beam diameter 6mm Input beam diameter 4.2mm

Scribing by TEM00 femtosecond Laser (Courtesy of Altechna)

scribing_gauss scribing_with_f_pishaper
Focusing by an ordinary lens without Beam Shaping Focal-piShaper installed in front of a focusing lens

Heating by Fiber Laser (Courtesy of CARS, University of Chicago)

Comparison of heating of tungsten foil by:

  • a TEM01 beam focused by a lens (left column),
  • a TEM00 beam focused by a lens with a Focal-piShaper installed ahead, (right columns).
  • Power is stepwise increased in top-down direction.
  • Brightness of a dot corresponds to temperature.
  • One can see variation of effective beam diameter in case of non-shaped TEM01 beam (by the way with a TEM00 beam the diameter variation would be greater) and almost constant beam diameter with only variation of temperature (brightness) in case of TEM00 beam with a Focal-piShaper.
heating_without_and_with_f_pishaper

Focal-piShaper 9_xxx_q – high efficient beam shaper SQUARE shaped focused spots

With these unique tools it becomes possible to create focused spots with FLATTOP profile and SQUARE shape. With nearly 100% efficiency the Focal-piShaper produces various profiles:

  • Flattop
  • Reverse Gauss
  • Donut

An appropriate optical design provides simple adjustment procedure and lets it easy to integrate the Focal-piShaper in your applications:

  • Photovoltaics
  • Marking and Engraving
  • Drilling
  • Selective Laser Melting
  • Scribing
  • Dicing
  • Material micromachining
  • Printing
  • Microwelding

Technical Specifications

Common for all  Focal-piShaper 9_xxx  models:
Type Telescope of Galilean type ( without internal focus)
Input beam – TEMoo, Collimated or low divergence
– Diameter <16 mm
– Optimum 2w diameter for a Gaussian beam 4…8 mm (1/e2)
Output beam – Collimated or low divergence
– Profile is optimized for Intensity distribution manipulation in focal plane of a diffraction limited lens
– Diameter <16 mm
Other features – Easy integration to an optical setup and adaptation to a laser source
– Compact design suitable for scientific and industrial applications
– A diffraction limited focusing lens of any type can be applied with the F-piShaper
– Easy tolerances for alignment as well as positioning of the F-piShaper with respect to a focusing lens
– Capability to work with scanning mirrors
Overall dimensions – Diameter 41 mm
– Length 110 mm
Mounting External Thread M 27×1
Weight 200 g
Features
Model
Operating wavelength range,  nm
Applications based on
Focal-piShaper 9_1064
1020 – 1100
Nd:YAG, Fiber and other near IR-lasers
Focal-piShaper 9_532
520 – 550
2nd (532) Harmonics of Nd:YAG laser
Focal-piShaper 9_355
330 – 380
3rd (355) Harmonics of Nd:YAG laser
* – working wavelength range without taking into consideration on the coatings
** – according to coatings applied

Basic principles of Focal-piShaper (or F-piShaper) operation:

  • F- piShaper is a telescopic optical systems that transforms Gaussian or similar Intensity distribution of TEMoo laser beam to a beam providing manipulation of intensity profile in area of Focus of the focusing lens;
  • F- piShaper can be easily (by turning one ring only!) adapted to beams of various diameters, for the F- piShaper_9_xxx optimum 2w diameter range is 4-4.5 mm (1/e2);
  • Low sensitivity to misaligments and beam size variation;
  • The transformation is provided for a certain wavelength range;
  • Optical design without internal focusing of a beam;
  • Any focusing lens could be applied; the only condition is the lens to be diffraction limited one;
  • There are no limitation on applying scanning mirror heads.

Drawings

f_pishaper_9_1064_drawing

Scribing by TEM00 femtosecond Laser (Courtesy of Altechna)

scribing_gauss scribing_with_f_pishaper
Focusing by an ordinary lens without Beam Shaping Focal-piShaper installed in front of a focusing lens

Highly efficient Collimator – Beam Shaper converting
Gaussian to Flattop profile for high power TEM00 fiber lasers

With these unique tools the long-standing wish to manipulate the shape of focused beams becomes a reality.

With nearly 100% efficiency Focal-piShaper produces various profiles:

  • “Flattop”
  • “Inverse Gauss”
  • “Donut”

Applications:

  • Microwelding
  • Drilling
  • Selective Laser Melting
  • Material micromachining
  • Laser Heating in Geophysical researches
  • Marking and Engraving
  • Scribing
  • Cutting

Technical Specifications

Type Collimator, without internal focus
Input beam – TEM00, M2<1.4
– Divergent
– Full divergence = 0.2-0.24 rad, NA = 0.1-0.12 (1/e2)
Output beam – Collimated or low divergent
– Profile optimized to manipulate intensity distribution near focus of a diffraction limited focusing lens
– Diameter < 20 mm
Spectral range 1020 – 1100 nm
Laser Power up to 2 kW (CW)
Other features – Adapted to operate with fiber lasers
– Compact design suitable for industrial applications
– Mechanical design is compatible with QBH fiber holder
– A diffraction limited focusing lens of any type can be applied with the Focal-piShaper
– Easy tolerances for alignment as well as positioning of the Focal-piShaper with respect to a lens
– Capability to work with scanning mirrors
Overall dimensions – Diameter 77 mm
– Length 130 mm
Weight 650 g
Mounting Input (fiber side): inner thread M 30×0.75
Output: outer thread M 30×0.75

f_pish_na_01_shema

scribing_gauss Examples of Profiles

Series of high efficient Beam Shapers to manipulate
the intensity profile of focused TEM00 beams CO2 Lasers

Focal-piShaper produces various profiles:

  • Flattop
  • “Reverse Gauss”
  • “Donut”
  • “Trident”, etc.

An appropriate optical design provides simple adjustment procedure and lets it easy to integrate the Focal-piShaper in your applications:

  • Marking and Engraving
  • Drilling
  • Scribing
  • Dicing
  • Printing
  • Welding

Technical Specifications

Type Telescope of Galilean type ( without internal focus)
Input beam – TEMoo, Collimated or low divergence
– Diameter < 24 mm
– Optimum 2ω diameter for a Gaussian beam 8.16 mm (1/e2)
Output beam – Collimated or low divergence
– Profile is optimized for Intensity distribution manipulation in focal plane of a diffraction limited lens
– Diameter < 24 mm
Other features – Easy integration to an optical setup and adaptation to a laser source
– Compact design suitable for scientific and industrial applications
– A diffraction limited focusing lens of any type can be applied with the Focal-pShaper
– Easy tolerances for alignment as well as positioning of the Focal-pShaper with respect to a lens
– Capability to work with scanning mirrors
– Applications based on CO2 lasers
Overall dimensions – Diameter 48 mm
– Length 171 mm
Weight 320 g
Mounting – Entrance: External Thread M 27×1 or M 33×1
– Exit:        External Thread M 27×1
Focal-piShaper 12_CO2 features
Model
Focal-piShaper 12_CO2_10.6
Focal-piShaper 12_CO2_9.4
Optimum spectral range
10.5 – 10.7 μm
9.3 – 9.5 μm

Scribing by TEM00 femtosecond Laser (Courtesy of Altechna)

scribing_gauss scribing_with_f_pishaper
Focusing by an ordinary lens without Beam Shaping Focal-piShaper installed in front of a focusing lens