100mm fused silica optical window

Product Description

Precision 100mm Fused Silica Plano-Plano Optical Window – 10mm Thick, Uncoated

This is a premium, uncoated optical window fabricated from high-purity UV-grade fused silica. With a 100mm diameter and 10mm thickness, it offers excellent parallelism, mechanical stability, and outstanding broadband transmission from deep UV through the visible spectrum into the near-infrared (NIR). Professionally marked for orientation, this window is a versatile tool for demanding laser, vacuum, and metrology applications.

Key Specifications:

• Diameter: 100 mm

• Thickness: 10 mm (excellent parallelism)

• Material: UV-grade fused silica (low thermal expansion, high laser damage threshold, >90% transmission from ~180 nm to 2.5 µm)

• Surfaces: Both surfaces optically polished, uncoated for maximum broadband transmission

• Surface Quality: Side 1 marked “1” – higher precision reference side (typically λ/10 or better flatness); Side 2 marked “2” – secondary polished side

• Clear Aperture: >90% of diameter (full aperture is usable)

• Edge Finish: Ground with protective bevels

Why This Window Is a Superior Value:

• Orientation Clarity: The marked sides allow for repeatable setup in interferometry, alignment, or testing where surface flatness matters.

• Broadband Performance: Uncoated surfaces ensure maximum transmission across the widest possible spectral range without coating limitations.

• Lab-Grade Provenance: Sourced from research or industrial surplus, ensuring professional fabrication and handling standards.

Applications:

• High-Power Laser Systems: Ideal beam path window for excimer, Nd:YAG, or high-power diode lasers where coating damage is a concern.

• High-Vacuum & Cryogenic Viewports: Stable window for chamber applications requiring UV-to-NIR transparency and thermal shock resistance.

• UV Lithography & Spectroscopy: Essential substrate for deep-UV processes demanding low absorption.

• Interferometry & Metrology: Use Side 1 as a reference flat in optical testing setups.

• Precision Spacing & Coating Substrate: Ultra-stable spacer or base for custom optical coatings.