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Related Experiment Video

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Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters
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Diffractive paper lens for terahertz optics.

Agnieszka Siemion1, Andrzej Siemion, Michał Makowski

  • 1Faculty of Physics, Warsaw University of Technology, Koszykowa 75, Warsaw 00 662, Poland.

Optics Letters
|October 18, 2012
PubMed
Summary

We introduce inexpensive paper-based diffractive lenses for terahertz (THz) applications. These custom, large-diameter optics offer a cost-effective solution for initial experimental testing of THz setups.

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Area of Science:

  • Optics and Photonics
  • Terahertz (THz) Technology

Background:

  • Passive terahertz (THz) systems necessitate large-diameter optical elements for efficient weak signal detection.
  • High f-number optics often require complex aspheric designs for optimal resolution and energy efficiency.
  • Traditional testing and numerical modeling of THz optics are costly and time-consuming.

Purpose of the Study:

  • To propose and characterize inexpensive, easily manufacturable diffractive lenses for THz applications.
  • To offer a cost-effective alternative for initial experimental setup testing in THz systems.
  • To demonstrate the customizability of optical function in paper-based diffractive lenses.

Main Methods:

  • Development of diffractive lenses using regular paper.
  • Manufacturing of large-diameter paper-based diffractive lenses.

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  • Characterization of lens performance using time-domain spectroscopy.

    • Main Results:

    • Demonstrated feasibility of using regular paper for THz diffractive lenses.
    • Showcased ease of manufacturing for large-diameter optics.
    • Confirmed customizability of optical function for THz setups.
    • Presented characterization data from time-domain spectroscopy.

    Conclusions:

    • Paper-based diffractive lenses are a viable, low-cost option for THz optics.
    • These lenses facilitate rapid prototyping and initial testing of THz experimental setups.
    • The proposed method offers a practical approach to developing custom THz optical elements.