Thorlabs WW41050 Wedged UV Grade Fused Silica Window

🔍 Specifications for WW41050 (Uncoated)

• Diameter: 1″ (25.4 mm), with tight tolerance (+0.0/–0.2 mm)

• Thickness: 5 mm ±0.3 mm

• Substrate Material: UV fused silica (UVFS), typically Mal‑1965 — offering high transmission from ~185 nm into the infrared and low thermal expansion

• Wedge angle: Approximately 30 arcmin (≈ 0.5°), tolerance ±10 arcmin

• Clear Aperture: ≥ 22.86 mm

• Surface Quality: λ/10 over central Ø10 mm; ≤ λ/10 over full aperture; scratch‑dig 10‑5 (laser windows standard)

🧩 Use‑Case Highlights

• Beam sampling or feedback suppression: wedge avoids interference fringes and back‑reflections.

• UV‑capable applications: uncoated offers broad transmission down to ~185 nm (~4% loss per surface), while coated versions offer high transmission and low reflection in specified bands

• Laser systems: choose the coating optimized for your laser wavelength range; for example, WW41050‑C3 is ideal for 266 nm systems.