Optical Windows

Sapphire Windows

Custom sapphire windows for durable optical protection

PRODUCT OVERVIEW

Introduction

Sapphire windows are optical windows manufactured from synthetic sapphire, a high-performance optical material known for its exceptional hardness, high mechanical strength, and broad transmission range from ultraviolet to infrared wavelengths. The combination of excellent durability and optical performance makes sapphire an ideal material for demanding optical window applications.

A sapphire optical window provides a durable optical interface for protecting sensitive components while maintaining reliable light transmission. Compared with conventional optical glass materials, sapphire offers superior resistance to scratching, thermal shock, and harsh environmental conditions while preserving high optical clarity.

Applications

  • Laser system protective windows
  • High-pressure optical viewports
  • Research and analytical instruments

Features & advantages

  • High hardness and excellent abrasion resistance
  • Broad transmission spectral range
  • Good resistance to temperature variation and chemical exposure
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TECHNICAL DATA

Product specifications

Parameter Specification
Material Sapphire (Al₂O₃)
Shape Round, square, rectangular, or custom
Transmission Range 170 nm – 5.5 μm
Dimensions (mm) 1–200
Thickness (mm) 0.5–10
Dimensional Tolerance (mm) +0.0/-0.1 typical, tighter options available
Surface Quality 60/40 S/D– 20/10 S/D available
Surface Flatness λ/4 typical, tighter options available
Parallelism <1 arcmin, tighter options available
Clear Aperture > 90%
Coating Uncoated / AR coating

Specifications represent typical capabilities for sapphire window. Final parameters are confirmed according to specific optical and mechanical requirements.

ENGINEERING & OPTIONS

Technical capabilities & processing options

  • Sapphire Material Processing:
    Strahl provides precision sapphire processing with controlled material quality, thickness, and dimensional accuracy for optical window requirements.
  • Precision Surface Finishing:
    Advanced polishing processes achieve high surface quality and flatness to maintain optical clarity and minimize wavefront distortion.
  • Dimensional and Edge Control:
    Accurate machining and edge finishing ensure reliable mechanical integration for custom sapphire window configurations.
  • Optical Coating Options:
    AR coatings can be applied to sapphire windows to improve transmission performance across specific wavelength ranges and optical system requirements.
CUSTOM OPTICS

Need a Custom Sapphire Window?

Share your drawing, operating wavelength, dimensions, surface specifications, and quantity. We can review the sapphire window geometry, optical finish, and coating options to determine a suitable configuration for your application.

Discuss your requirements

Looking for standard sizes? View stock sapphire windows

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