Holo/Or’s High Efficiency Beam Splitters (HEDS) are a special sub-aperture based diffractive optical element (DOE) capable of splitting a beam into Double Spot 1×2 or Quattro Spot 2×2 spots with 97% efficiency and almost no power in undesired orders.
HEDS operate with a sub-aperture approach, and are therefore sensitive to centering and have an effect on the spot shape and size. The spot size in the splitting axis is increased (spot becomes slightly elliptical), and this effect is observed when using single-mode lasers (low M2). For multi-mode lasers the effect is often negligible. We encourage you to contact our Sales for a detailed simulation of the HEDS in your system.