Sill Optics Beam Expander

Sill Optics Beam Expanders are designed to optimize focus diameter, focus position, and beam propagation within a laser system. All optical elements within these beam expanders are constructed from fused silica substrates featuring a special low-absorption coating to minimize thermal effects. These beam expanders can withstand the high thermal strain of small beam diameters and provide stable and reliable performance while utilizing high average or high peak power lasers. Sill Optics Beam Expanders are available for use with 1030 – 1090nm wavelength ranges and feature high damage thresholds for pulsed lasers up to 5.0 J/cm² (1ns, 50Hz). These beam expanders are ideal for high-power laser applications requiring a fixed magnification, such as prototyping, solar cell manufacturing, confocal microscopy, or R&D.