Zygo

32 Inch 4% Reference Flat

32 Inch 4% Reference Flat - Main image
$220.32 $324 In stock

Category: Accessories

The ZYGO 32 Inch 4% Reference Flat is a large-aperture reference optic intended for interferometric testing and related optical metrology applications. It is specified with 4% reflectivity and 1/8 wave PVr surface accuracy, as described in the product reference information.

  • Brand: ZYGO
  • Size: 32 inches
  • Reflectivity: 4%
  • Surface accuracy: 1/8 wave PVr
  • SKU: SSR RF-633-32-1 (Standard)

This reference flat is offered in the standard configuration under the listed SKU. Please refer to the product specifications above when confirming suitability for your setup.

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Customer Reviews (4.8 / 5 · 5 reviews)

Samuel K. ★★★★★

The 4% reflectivity is spot-on for my interferometer setup—the fringe contrast is perfect. It arrived well packaged and shows no visible surface defects under green light.

Sophia ★★★★★

Finally, a reference flat that actually lives up to its 1/8 wave spec out of the box. The 4% reflectivity is perfect for my interferometer setup without needing extra coatings.

Lucy ★★★★★

The 32-inch aperture is massive, yet the surface quality holds up beautifully across the whole clear area—I checked fringes edge-to-edge and saw no surprises. It arrived well-packed and the 4% reflectivity paired perfectly with my interferometer’s beam splitter setup.