Zygo

4-inch Ultra Flat

4-inch Ultra Flat - Main image
4-inch Ultra Flat - View 2
$2.96 $4 In stock

Category: Accessories

The ZYGO 4-inch Ultra Flat is an optical accessory designed for precision applications. It is specified with 4% reflectivity and lambda/50 PVr, and features dual coatings at 633 nm and 1.064 µm.

  • Brand: ZYGO
  • Size: 4-inch
  • Reflectivity: 4%
  • Surface specification: lambda/50 PVr
  • Dual coated at 633 nm and 1.064 µm
  • SKU: Standard, code 6024-0485-11
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Customer Reviews (5.0 / 5 · 5 reviews)

Joseph ★★★★★

I was honestly a little nervous about the 4% reflectivity spec, but it's dead on. The lambda/50 PVr flatness is perfect for my interferometry setup, and it's been rock solid at both wavelengths.

Michael ★★★★★

The dual coatings at 633 nm and 1.064 µm make this a workhorse for my lab setup—I can switch between wavelengths without swapping optics. Reflectivity measures right at that 4% spec during testing. Solid build for the price.

Lily ★★★★★

The lambda/50 PVr figure is no joke — I checked it against my reference flat and the fringe pattern was dead straight across the whole 4-inch aperture. The dual 633 nm and 1.064 μm coatings saved me from swapping optics between my HeNe and Nd:YAG setups.

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