Description

Sapphire wedged windows are precision optical components designed to minimize back reflections and eliminate interference effects in laser and infrared optical systems. Thanks to sapphire’s exceptional hardness, broad transmission range, and thermal stability, these windows are ideal for demanding environments including high-power lasers, spectroscopy, semiconductor processing, aerospace, and harsh industrial applications.

Wedged geometries help suppress Fabry–Perot interference and optical etalon effects, improving beam quality and system stability. Custom wedge angles, dimensions, surface quality, and anti-reflection coatings are available for UV, visible, and IR wavelength ranges.

With strict flatness and wedge angle tolerances, these windows deliver minimal distortion and high optical accuracy. Customizable sizes, wedge angles, thicknesses, and optional AR/BBAR coatings allow adaptation to specific system requirements, providing engineers and researchers with reliable, high-performance optical solutions.

Combining mechanical strength, thermal resilience, and optical precision, Sapphire Wedged Windows are an essential component for applications demanding both durability and superior optical performance.

Why Use Wedged Optical Windows?

Wedged optical windows are designed to reduce unwanted back reflections and suppress interference fringes caused by parallel optical surfaces. In laser systems, wedged windows improve beam stability, reduce etalon effects, and minimize optical feedback into sensitive laser cavities. Sapphire wedged windows additionally provide exceptional mechanical durability, thermal conductivity, and chemical resistance.

Sapphire Wedged Windows

Specifications

Material: Custom, Sapphire, Chalcogenide Glass, BK7, UVFS, FS
Surface Flatness: Lambda/4
Surface Quality (Scratch-Dig): 10-5, 20-10, 40-20, 60-40
Wedge Angle: 3 arc minutes
Diameter: 5 mm
Thickness: Not Specified
Wedge Angle: +/-3 arc minutes (+/-5 arc seconds for customized high precision)
Diameter: 5mm to 200mm+
Diameter Tolerance: +/-0.1mm (+/-0.005mm for customized high precision)
Thickness Tolerance: +/-0.1mm (+/-0.005mm for customized high precision)
Surface Quality: 60/40 (10/5 for customized high precision)
Flatness: up to 1/4 lambda per 25.4mm at 632.8nm for customized high precision

Got questions about specs? Use the inquiry form to ask.

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Features

  • Compared to fused silica or BK7 windows, sapphire wedged windows provide significantly greater hardness, improved thermal performance, and excellent chemical resistance, making them especially suitable for demanding laser and infrared applications.
  • Custom sapphire wedged windows are available with precision polishing, custom wedge angles, edge treatments, mounting features, and broadband or narrowband AR coatings tailored to specific laser wavelengths and optical systems.

Applications

  • Optical Measuring Instruments
  • Consumer Electronics
  • Optoelectronics
  • Medical Devices
  • High-power laser systems
  • Infrared imaging systems
  • FTIR and Raman spectroscopy
  • Semiconductor processing
  • Aerospace and defense optics
  • Medical laser systems
  • Harsh environment optical protection
  • Beam delivery systems
  • Scientific instrumentation

Frequently Asked Questions

What are sapphire wedged windows used for?
Sapphire wedged windows are used in laser systems, spectroscopy, infrared imaging, and harsh-environment optics where reduced back reflections and high durability are required.
Why choose sapphire over fused silica or BK7?
Sapphire offers superior hardness, thermal conductivity, scratch resistance, and broad transmission from UV to mid-IR wavelengths.
What is the purpose of the wedge angle?
The wedge angle helps suppress Fabry–Perot interference and prevents unwanted optical feedback in laser systems.
Are AR coatings available?
Yes, sapphire wedged windows can be supplied with custom anti-reflection coatings optimized for UV, visible, near-IR, or mid-IR wavelengths.

Got more questions? Use the inquiry form to ask the supplier directly.

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