Optical Mirrors Phase Retarders

Phase Retarders

90˚ phase retarders (90RSI/RCU) are used to convert linear polarization to circular polarization. Circular polarization means an equal amount of s-pol and p-pol for any beam orientation. With 90˚ phase retarders used in cutting, the material can be removed uniformly regardless of cutting directions. Reflective Phase Retarders are used as beam bending mirrors external to the laser cavity to establish and maintain circular polarization. This requirement is particularly vital for laser material processing applications where cut or scribed edge quality, and weld penetration, are critical to the consistency and precision of the final part. Zero degree phase retarders (0RSI/RCU) maintain control over the circularly polarized beam.


Don’t limit what you see. Customization may be available for this product. Let us know your specifications in the RFQ form. You may also browse our manufacturing capabilities.

Product TypePart NumberDiameter (mm)MaterialThickness(mm)Type
Phase Retarder0RSI-25-325.0Silicon3.00° Phase Retarder
Phase Retarder0RSI-1-325.4Silicon3.00° Phase Retarder
Phase Retarder0RSI-1.5-438.1Silicon4.00° Phase Retarder
Phase Retarder0RSI-2-550.8Silicon5.00° Phase Retarder
Phase Retarder0RCU-38-1038.0Copper10.00° Phase Retarder
Phase Retarder0RCU-50-1050.0Copper10.00° Phase Retarder
Phase Retarder0RCU-60-1060.0Copper10.00° Phase Retarder
Phase Retarder90RSI-1-325.4Silicon3.090° Phase Retarder
Phase Retarder90RSI-1.5-438.1Silicon4.090° Phase Retarder
Phase Retarder90RSI-2-550.8Silicon5.090° Phase Retarder

Product Page Contact Form

We suggest using your organization’s email with its own domain (if any).

Knowledge Hub