Ultra Thin Polished Sapphire Substrates

Sapphire’s mechanical, optical, electrical, chemical and nuclear properties combined with Valley Design’s ability to thin this material to ultra-thin dimensions, makes it an exceptional material for a multitude of critical applications.

In stock at Valley Design:

• Various R-plane sapphire substrates, .005″, .010″, .015″, .020″. thick, optically polished both sides to 40/20 scratch/dig surface finish.
• A-plane Sapphire disks and rectangles .001″, .002″, .003″, .004″, .005″, and .010″ thick, polished on both sides with a 40/20 scratch/dig surface finish.

When polishing sapphire, the optical scratch/dig figures above relate approximately to microinches or Angstroms Ra in the following common notations:

Note: Surface finishes for Fused Silica and glass are approx. 1/2 the value in angstroms or microinches as outlined above for Sapphire.

Other Sapphire Web sites:

• valleydesign.com/fiber-optics
  Surface finish measurements with a WYKO interferometer
• valleydesign.com/custom-dicing/sapphire
  Dicing Sapphire substrates and wafers