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Precision Light Control with Custom Waveplates

Featured Product from Foctek Photonics, Inc.

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Custom Optical Waveplates

  • Zero Order Waveplates
    • True Zero Order Waveplates
    • Low Order Waveplates
  • Dual Wavelength Waveplates
  • Achromatic Waveplates

An optical waveplate is a device in which the polished surfaces contain the optical axis. All light incident normal to the surface is composed of components polarized parallel and perpendicular to the axis. In such a device, light polarized parallel to the axis propagates slower than light polarized perpendicular to the axis. As light propagates through the optic, the phase shift between the two components increases with thickness. This phase shift is called retardance. The most popular retarders are quarter and half-wave.

With an appropriate choice of thickness, any degree of retardance may be achieved at any wavelength for which quartz is transparent. However, the minimum thickness necessary to achieve a mechanically strong part corresponds to several full waves of retardance.

Half Waveplate

  • Rotates linearly polarized light to any desired orientation
  • Rotation angle is twice the angle between the incident polarized light and optical axis

Quarter Waveplate

  • When linearly polarized light is input at 45 degrees to the axis of a quarter waveplate, the output is circularly polarized
  • Similarly, input circularly polarized light is transformed into linearly polarized light

Explore our custom optical waveplate series for precise optical control, meeting your needs with precision.