Product added to cart

Superpolishing Manufacturing

  • Minimize Scatter with Ultra-Low Surface Roughness

  • RMS Surface Roughness <1Å

  • Standard Sizes and Shapes from 12.7 to 50.8mm

  • Custom Sizes and Shapes Upon Request

  • Supported by State-of-the-Art Metrology

  • Parts-per-Million Level Scattering


Edmund Optics® is an industry leader in superpolishing optics for ultra-low surface roughness. Superpolished optics minimize scatter and are ideal for laser optics applications where throughput is critical. This technology complements Edmund Optics’ low-loss coatings, which utilize ion beam sputtering (IBS), because coating performance is often limited by the roughness of the glass substrates. Our expert coating and manufacturing engineers can develop a customized solution for your system and guide you throughout your entire product development process. World-class metrology ensures that all superpolished surfaces meet your application needs. What can we make for you?


Superpolishing Capabilities*
RMS Surface Roughness** <1Å
Surface Accuracy <0.1λ
Parallelism (Diameter < 12.7mm) <1 arcsec
Parallelism (Diameter ≥ 12.7mm) <30 arcsec
Surface Quality 10-5 (Over Clear Aperture)
Diameter 6 – 50.8mm
Materials Fused Silica
*Tighter specifications are achievable upon request.
** ≤1 RMS as measured using an optical profiler using a 20x objective at a spatial frequency bandwidth of 9 to 250 cycles per mm. RMS (root mean square) and P-V (peak-to-valley) specifications are calculated from the same set of data, but P-V describes the difference between the highest and lowest data points while RMS describes the mathematical average of a data set.


Ultra-Low Surface Roughness
Polishing & Metrology

To learn more about the fabrication and measurement of superpolished optics, view our on demand webinar.

View Now

Learning Resources


Informative corporate or instructional videos ranging from simple tips to application-based demonstrations of product advantages.

Introduction to Laser Optics Lab

Introduction to Laser Optics Lab

Metrology at Edmund Optics: Measuring as a Key Component of Manufacturing

Metrology at Edmund Optics: Measuring as a Key Component of Manufacturing

Application Notes

Technical information and application examples including theoretical explanations, equations, graphical illustrations, and much more.

Metrology for Laser Optics

Subsurface Damage

Trending in Optics

The future depends on optics through technological and application advancements. Edmund Optics® continues to embrace the future by providing information on trending products and technologies.

Superpolished Optics


Recorded webinars from Edmund Optics® experts on a wide range of optics and imaging topics.

Ultra-Low Surface Roughness Polishing and Metrology

Published Articles

Links to technical articles appearing in industry publications authored by Edmund Optics® or featuring contributions from Edmund Optics' engineering team and key management.

Fabrication of ultralow-roughness surfaces: The Beilby layer

White-light interferometry resolves sub-Angstrom surface roughness


Standard Products

Standard superpolished products are in-stock and ready to ship. Contact us to discuss custom options tailored for your application.


Superpolished Substrates

  • Both Surfaces Superpolished with ≤1Å RMS Surface Roughness
  • Low Scatter Surfaces Ideal for UV or High-Power Laser Applications
  • UV Fused Silica Substrates with Polished Bevels and Edges
  • In-House Manufacturing Enables Custom Sizes and Shapes from 6 to 76.2mm and Surface Roughness <0.5Å

View All

Superpolished Substrates