Ultra-thin BK7 UVFS Windows

March 8, 2021
Thin windows made from BK7 and UV fused silica are provided, windows has high specifications as: surface quality of 10-5 S/D, parallelism of 10 arc second, which are suitable for ultra-fast laser applications.

High Precision Thin windows made from BK7, UV Fused Silica and Quartz Crystals are available in Shalom EO, the windows feature superior surface quality of 10/5 Scratch/Dig, parallelism of 10 arc sec, thickness down to 0.03mm, diameter down to 0.5mm, all of which contributes to their promising competency for applications of high precision optical systems such as Femto-line lasers. The windows are made from N-BK7 or UV Fused Silica, where N-BK7 are appropriate for applications from Visible to IR spectrum (350-2000nm), and UV Fused Silica possesses extremely low absorption in the UV range.

The standard specifications of Thin BK7, UVFS, and Quartz Crystals Windows offered in Shalom EO include: 12.7mmx0.2mm with λ/2 flatness, 12.7mmx1.0mm with λ/10 flatness, 25.4mmx0.2mm with λ/2 flatness and 25.4mmx1.0mm with λ/10 flatness, in addition to other custom dimensions. The windows could be configured with mounts for ease of handling, both uncoated window substrates and custom AR coatings are available.


  • Off-the-shelf thin windows available
  • Made of BK7, UV Fused Silica, or Quartz Crystals
  • Thin and high flatness
  • Surface quality 10/5 and parallelism 10”
  • Minimum thickness: 0.03mm, minimum size: 0.5mm

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