Optically Contacted Zero Order Waveplate

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Optically Contacted zero order waveplate is constructed by two quartz plates with their fast axis crossed, the two plates are constructed by optically contacted method, the optical path is epoxy free. The difference in thickness between the two plates determines the retardance. Zero order waveplates offer a substantially lower dependence on temperature and wavelength change than multi-order waveplates.


  • High Damage Threshold

  • Better Temperature Bandwidth

  • Wide Wavelength Bandwidth 

  • Both Sides AR Coated

  • RoHS Compliant


Material Crystal Quartz
Dimension Tolerance +0.0/-0.2 mm
Surface Quality 20/10 scratch and dig
Clear Aperture >90 % central area
Wavefront Distortion <λ/8 @ 632.8 nm
Parallelism(for single plate) <1 arc second
Retardation Tolerance <λ/300
AR Coating R<0.25 % @ central wavelength
Damage Threshold >5 J/cm2, 20 ns, 20 Hz @ 1064 nm
Type Optically Contacted