Phase Retarding » IR Phase Retarding Mirror

2.0 µm ≤ λ ≤ 20.0 µm

Phase Retarding Mirror coatings are designed to produce a specific phase shift between the S and P polarization components of an incident CO2 laser beam.

Coatings designed for 0º phase shift maintain the incident polarization state in the reflected beam. Coatings designed for λ/4 (90º) phase shift convert a linearly polarized beam into a circularly polarized beam. Coatings designed for λ/8 (45º) phase shift convert a linearly polarized beam into an elliptically polarized beam.

PRM

RMI Standard Specifications
Design Wavelength:	10.6 µm
Angle of Incidence:	45º
Reflectance:	R ≥ 98.5%
Retardation:
Standard:	0: 0º ± 6º λ/4: 90º ± 6º
Precision:	0: 0º ± 3º λ/4: 90º ± 3º

Phase Retarding Coatings

Optical Coatings:

Phase Retarding » IR Phase Retarding Mirror