The zero order waveplate is designed to give a retardance of zero full waves, plus the desired fraction. Zero order waveplate shows better performances than multiple order waveplates, it has brod bandwidth and a lower sensitivity to temperature and wavlenght changes. It should be considered for more critical online_orderings.
Specifications:
Material:Quartz
Dimension Tolerance: +0.0, -0.1
Wavefront Distortion: <l /8@633nm
Retardation tolerance: l/500
Parallelism: <1 arc second
Surface quality: 20-10
Clear aperture: Central 90%
AR coated: <0.2% @l wavelength
Holder:refer to Holder for waveplate
FOCtek provides standard waveplate wavelengths (nm) listed as below:

Zero Order Waveplate s-Optically Contacted Optically Contacted AR Coated,R<0.2% High Damage Threshold Better Temperature Bandwidth Wide Wavelength Bandwidth

Zero Order Waveplate Air-spaced

True Zero Order Waveplates-Cemented
This type of zero order waveplate is constructed of a true zero order waveplate and a BK7 substrate.As the waveplate is very thin and easy to be damaged,the Bk7 plate's function is to strengthen the waveplate.

Cemented by Epoxy Wide Angle Acceptance Better Temperature Bandwidth Wide Wavelength Bandwidth AR Coated, R<0.2%

Standard Wavelength Applied: l /4:532 nm,632.8nm,780nm,808nm,850nm,980nm,1064nm,1310nm,1480nm,1550nm
l/2:532 nm, 632.8nm,780nm,808nm,850nm,980nm,1064nm,1310nm,1480nm,1550nm

Zero Order Waveplates-Cemented by Epoxy

This type of zero order waveplate is constructed of two multiple order waveplate with their axes crossed.Thus,the effect of the first plate is canceled by the second,except for the residual difference between them.

Cemented by Epoxy Better Temperature Bandwidth Wide Wavelength Bandwidth AR Coated, R<0.2%