A waveplate or retarder is an optical device that alters the polarization state of a light wave traveling through it. Two common types of waveplates are the half-wave plate, which shifts the polarization direction of linearly polarized light, and the quarter-wave plate, which converts linearly polarized light into circularly polarized light and vice versa.

PSG offers a multitude of varieties and configurations including, Multiple-Order, Zero-Order, Dual-Wavelength, Ultra-Thin, and Low-order wave plates.



Standard Specifications

Thickness Range Varies on product
Transmitted Wavefront Distortion λ/10 @ 632.8nm over CA
Surface Quality 10-5 over CA
Parallelism 0.5 arc seconds
Clear Aperture (CA) 85% of Central Dimension
Retardation Tolerance λ/100 – λ/600 typical – W/L Dependent
Damage Threshold 1MW / cm² (CW), 10J cm² 10ns Pulse
Material Synthetic Single Crystal Quartz
Coating AR “V” Coat; R<0.25% per surface. BBAR Coat:
R avg ≤0.50% per surface

Waveplates can be ordered as mounted or unmounted components.