PRIME Beamshaper

Customer Diffuser

Description

PowerPhotonic’s Psuedo Random Intensity Mapping Element (PRIME) beamshapers use a unique freeform direct-write process to fabricate a highly non-uniform surface in fused silica. 

These quasi-random optics are designed to impart a well-defined and tightly controlled divergence angle which can range from fractions of a degree up to 10 degrees (FWHM) with potential transmission efficiencies in excess of 99%.

The PRIME beamshapers can be used to create highly arbitrary intensity distributions specific to an application, while remaining highly insensitive to beam alignment and input distribution.  Examples include of intensity distributions include annuli, tridents, ramps, skewed Gaussians and more.

Product Data Sheet

Key Features

  • All fused silica optics
  • Customizable divergence (<1° to 10°)
  • Customizable intensity and spatial distributions
  • Highly variable edge steepness
  • Very low divergences achievable
  • Suitable for multi-mode lasers (M2 >5)

Benefits

  • Highest system efficiency possible >98%
  • Dramatic increase in beam uniformity
  • High power handling, >20kW CW
  • High laser damage threshold, >100J/cm2
  • No focal plane shift
  • Good through-focus performance
  • Insensitive to input beam properties

Target Applications

  • Materials processing: high power
    • Regime switch (thin <-> thick) laser cutting
    • Laser peening and slow cool annealing
    • Welding, brazing and cladding
    • Metal polishing
  • Pump beam homogenization

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