100mm fused silica beam splitter

Product Description

Rare 100mm Diameter Fused Silica Plate Beam Splitter – 50/50 Non-Polarizing (Defense Lab Surplus)

This is a rare, research-grade optical component: a 100mm (4”) plate beam splitter fabricated from high-purity fused silica, sourced from defense laboratory surplus. Designed for demanding high-power laser and precision photonics applications, its fused silica substrate provides an exceptional laser-induced damage threshold (LIDT), broad spectral transmission, and near-zero thermal expansion.

Key Specifications:

• Type: Plate Beam Splitter (Non-Polarizing, Broadband)

• Split Ratio: 50% Reflection / 50% Transmission (at 45° incidence)

• Diameter: 100 mm (≈4 inches)

• Thickness: 15 mm (provides superior thermal and mechanical stability)

• Substrate: Fused Silica (High laser damage threshold, UV to IR transmission, near-zero CTE)

• Coating: Dielectric Multilayer (Optimized for high efficiency, low absorption in visible/near-IR)

• Incidence Angle: 45° (standard)

Why This Is a Superior Investment:

• Uncommon Size & Build: A 100mm diameter, 15mm thick beam splitter on fused silica is a rare find outside custom OEM orders.

• Performance Security: Fused silica’s near-zero thermal expansion prevents warping under high thermal load, ensuring wavefront fidelity in sensitive interferometry or high-power beams.

• Provenance: Originates from defense R&D, indicating it was built to exceed commercial specifications for reliability and precision.

Applications:

• High-Power Laser Systems: Beam splitting in Nd:YAG, CO₂, or ultrafast laser setups where standard glass would fail.

• Precision Interferometry: Core component in Michelson or Mach-Zehnder interferometers for metrology and research.

• Advanced Imaging & Spectroscopy: For UV-Vis or Raman systems requiring low absorption and high stability.

• Photonics R&D: Ideal for prototyping in telecommunications, quantum optics, or laser diagnostics.

• High-End Educational Demonstrations: For university labs teaching advanced optics or photonics.