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Related Experiment Videos

Adjustable spiral phase plate.

Carmel Rotschild1, Shachaf Zommer, Shulamit Moed

  • 1Department of Physics, Technion-Israel Institute of Technology, 32000 Haifa, Israel.

Applied Optics
|May 4, 2004
PubMed
Summary

Researchers created an adjustable spiral phase retarder using a deformed plexiglass plate. This adaptable optical device allows for precise control over phase shifts at various wavelengths, crucial for optical applications.

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Area of Science:

  • Optics and Photonics
  • Materials Science

Background:

  • Spiral phase retarders are essential optical elements for manipulating light polarization.
  • Previous designs often lack tunability across different wavelengths or phase step values.

Purpose of the Study:

  • To construct and characterize a novel, adjustable spiral phase retarder.
  • To demonstrate the device's capability for wavelength and phase step control.

Main Methods:

  • Fabrication of a spiral phase retarder using a deformed cracked plexiglass plate.
  • Experimental characterization of the retarder's performance across various wavelengths and deformation levels.

Main Results:

  • Successfully constructed a functional spiral phase retarder with a phase profile phi(r, theta) = mtheta.

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  • Demonstrated tunability of the retarder by adjusting the degree of plexiglass deformation.
  • Showcased the ability to select the phase step value (2pim) for specific applications.

    • Conclusions:

    • The deformed plexiglass plate offers a versatile and adjustable platform for creating spiral phase retarders.
    • This method provides a cost-effective and adaptable solution for optical phase manipulation.
    • The developed retarder holds potential for diverse applications in optics and photonics requiring precise phase control.