150mm fused silica plane mirror

Product Description

High-Quality Large Precision Fused Silica Plane Mirror – 150mm Diameter × 38mm Thick, Protected Aluminum with Mounting Tabs

This is an exceptional, large-format precision plane mirror fabricated from fused silica and featuring a protected aluminum first-surface coating. With a massive 38mm thickness and 150mm diameter, it is engineered for extreme rigidity and thermal stability. The inclusion of three integrated mounting tabs allows for secure, stress-free installation in custom cells or mounts—ideal for demanding metrology, laser, or research applications.

Key Specifications:

• Diameter: 150 mm (~6 inches)

• Thickness: 38 mm (~1.5 inches – exceptional rigidity, minimizes distortion)

• Material: Fused silica (low thermal expansion, high laser damage threshold)

• Surface Figure: Plano (λ/10 or better typical) – suitable as a reference flat

• Coating: Protected aluminum (broadband high reflectivity, ~90%+ in visible-NIR)

• Mounting: Three precision mounting tabs (for stable, strain-free clamping)

• Edge/Back: Ground finish; minor handling marks on edges only

Why This Mirror Is Exceptional:

• Uncommon Thickness: A 38mm thick, 150mm fused silica mirror offers unparalleled stability, resisting deformation under thermal or mechanical load.

• Integrated Mounting Design: The three tabs enable secure mounting without inducing stress into the optical surface, preserving wavefront fidelity.

• Reference-Grade Flatness: Suitable as a reference flat for interferometry, autocollimation, or testing other optics.

Applications:

• Interferometry & Optical Testing: Reference flat for verifying flatness of mirrors, lenses, or windows.

• High-Power Laser Beam Steering: Stable, low-distortion mirror for steering high-power beams in industrial or research laser systems.

• Precision Metrology & Alignment: Critical component in scientific instruments, telescopes, or alignment benches.

• Custom Optical Systems: Ideal for periscopes, beam expanders, or stable folding mirrors in custom setups.