ZnSe Beam Expanders

Overview

ZnSe beam expanders increase CO2 laser beam diameter and reduce divergence before focusing or scanning. A beam expander is usually built from two or more optical elements and should be selected around wavelength, input beam size, output beam size, and mechanical thread.

Why Beam Expansion Matters

Expanding the beam can improve downstream focusing, reduce divergence, and help match the laser to scanner, marking, cutting, or inspection optics. Coaxiality and coating quality are important for stable high-power CO2 laser operation.

Typical Configurations

Engineering Notes

Before release, confirm input beam diameter, divergence, expansion ratio, mechanical thread, and the downstream scanner or focus-head interface. These details drive the practical beam expander configuration more than magnification alone.

Request a Configuration Check

Send your beam size, expansion ratio, mechanical thread, operating power, and coating target to request an engineering review.