Rocky Mountain Instrument Co.

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Waveplates » Multi-Order Waveplates

Waveplates are used in the synthesis and analysis of polarized light. Quarter Waveplates transform linearly polarized light into circularly polarized light, and vice-versa. Half Waveplates rotate the plane of polarization of linearly polarized light through any angle. They also convert left circularly polarized light into right circularly polarized light, and vice-versa.

Multi-Order Waveplates are made from a single Crystalline Quartz or Sapphire plate.

Retardation varies quickly with wavelength, thus they are generally useful only at their design wavelength. Retardation is also a function of plate thickness and is slightly temperature-depedent due to thermal expansion.

RMI Standard Specifications
Crystalline Quartz
Angle of Incidence:
Construction: Single multiple order plate
Transmitted Wavefront: λ/10 at 633nm
Surface Quality: 10 – 5, both surfaces
Diameter Tolerance: + 0.000, – 0.25mm
Thickness: 2.0 mm (nominal)
Wedge: ≤ 0.5 arc seconds
Bevels: Minimum safety bevel
Clear Aperture: Central 85% of diameter
Anti-Reflection Coating:
R ≤ 0.25% per surface
Retardation Tolerance: λ/100 - λ/600