CVI Melles Griot PR1‑1319‑20‑1025‑C Partial Reflecting Laser Mirror

• Product Series: PR1 — high energy partial reflecting laser mirrors

• Wavelength Center: 1319 nm (Nd:YAG/Nd:YLF/other lasers on 1319 nm line) — the number 1319 in the part code indicates design around that wavelength.

• Reflectance Specification: The 20 likely means ~20 % reflectivity (common coding; e.g., 40 would be ~40 % reflectance).

• Diameter: 1025 indicates 25.4 mm (1 inch) diameter.

• Substrate: Typically high‑quality optical glass (e.g., N‑BK7 or fused silica), depending on wavelength and laser power requirements.

• Thickness & Mounting: Standard thickness per CVI PR1 catalog (~6.35 mm for 1″ parts), with tight surface quality and flatness.

• Coating: Multilayer dielectric coating optimized for 1319 nm to give the desired partial reflectance with high damage threshold.

🧠 Typical Uses

• Laser cavities: as output couplers or intracavity beam splitters

• Beam sampling: picking off a small portion of a high‑power laser for diagnostics

• Optical systems: in measurement, alignment, and research setups requiring precise reflectance control