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Sapphire Windows

Product Highlights

Sapphire Windows

We produce Sapphire windows for a wide range of products and applications. Optical windows made of sapphire offers superior abrasion resistance, toughness, and fracture resistance compared to glass products. 

Our sapphire windows is produ

ced from our HEM grown Sapphire boules to customer specified dimensions. 

We can provide:

  • Sapphire windows substrates (as-cut or ground)- to be finished by the customer or
  • Final finished polished sapphire windows.


We can also offer the following options:

  • Optical flat per customer specification
  • Edge beveling
  • Laser cut through holes
  • Corner shaping
  • Coatings- anti reflective or customer specified coatings

Technical Specifications

 Material  Al2O>99.999%
 Orientation  A-plane/C-plane/R-plane/M-plane 0° ± 0.5° (Other orientations available)
 Size  Various length and width sizes up to 510mm diagonal; Various diamter sizes up to OD 510mm
 Thickness  ≥0.3mm
 BOW  ≤10μm
Bending Strength  ≥550 MPa
Transmission (400nm to 700nm) >85% (Coating options available)
Surface Quality Finished polish to S/D: 20/10
Edge Quality Chips <0.1mm
Packaging Customer specified


This document is copyright © September 1, 2015 GHTOT. All rights reserved. This document is provided for information purposes only; contents are subject to change without notice. It is not warranted to be error-free, nor subject to any other warranties or conditions including implied warranties and conditions of merchantability or fitness for a particular purpose.


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