PowerPhotonic’s range of fast axis collimator arrays (FAC) is designed to interface to complete laser diode stacks.  They allow the entire diode stack output to be collimated with a single element, providing an ultra-compact and robust solution that radically simplifies the cost and time of assembly of the complete system. 

The FAC array can either be specified with a standard bar pitch or, for optimal performance, matched to the diode bar stack using bar pitch data provided by the customer.  As a further optimization, PowerPhotonic offers customers the ability to customize the FAC array to tailor the far field profile to meet specific application requirements.

Product Spec Sheet+

Key Features

  • UV-fused silica
  • Single monolithic FAC array
  • High beam quality for QCW stack collimation and beam symmetrization
  • Fixed pitch increments, for select-on-test use
  • Matched-pitch, to optimize collimation of a specific stack
  • Single FAC element for a diode stack


  • Single optic collimates entire stack
  • Minimizes assembly time and build complexity with single active align and attach
  • Low mounted mass, minimum number of mechanical interface
  • Mechanically robust monolithic solution

Target Applications

  • QCW laser diode stacks
  • Solid state laser pumping
  • Illuminators
  • Line generators
  • Medical
  • Materials processing

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