CGHs for laser-beam shaping and pattern projection

Beam shaping – we guide light. Diffractive optics and computer-generated holograms offer a wide range of application possibilities.

false-color representation of a continuous phase profile for laser beam shaping

Laser-beam shaping

We achieve innovative solutions for the creation of nearly arbitrary light distributions, for example line or point lattices or the adjustment of Gaussian-shaped laser beams in a distribution with a homogeneous flat-top profile. So the laser power can be directed with perfect point precision. The grey-tone lithographic production process that we use allows for production of near-perfect saw tooth or other continuous phase profiles without steps. The diffraction efficiency that is achieved as a result of this is over 95% and scattered light is therefore almost completely avoided.

Examples of beam-shaping CGHs that we have developed include:

  • Focus arrays, for example 4×4 spots or 100×100 spots, arranged as hexagonal, lattice-shaped or rectangular
  • Ring focus with freely selectable diameter and diffraction-limited ring width
  • Top-hat scatter distributions with freely selectable divergences
  • Freely definable intensity profiles, such as logos

Naturally, we can also implement the calculated profiles in larger quantities on your desired substrate.

For further technical specifications, check the product sheet.

For advice, contact: Dr. Frank Weidner | Tel.: +49 6201 65040-17