Artifex Engineering Zero-order Waveplates

Better performance than low or multiple order waveplates. The zero order waveplate is designed to give a retardance of zero full waves, plus the desired fraction. Zero order waveplate shows better performance than multiple order waveplates. It has broad bandwidth and a lower sensitivity to temperature and wavelength changes. It should be considered for more critical applications. Specifications: Material: Quartz Dimension Tolerance: +0.0/-0.1 Wavefront distortion: λ /8@633nm Retardation Tolerance: λ/500 @ 532 nm and 1550nm λ/300 for all other wavelength Parallelism: <1 arc second Surface Quality: 20-10 scratch/dig Clear Aperture: Central 90% AR Coating: <0.2% @wavelength