Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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Terahertz Frequency Spreading Filter via One-dimensional Dielectric Multilayer Structures

  • Yi, Min-Woo (Department of Physics, Korea Advanced Institute of Science and Technology) ;
  • Kim, Young-Chan (Department of Physics, Korea Advanced Institute of Science and Technology) ;
  • Yee, Dae-Su (Center for Safety Measurement, Korea Research Institute of Standards and Science) ;
  • Ahn, Jae-Wook (Department of Physics, Korea Advanced Institute of Science and Technology)
  • Received : 2009.07.03
  • Accepted : 2009.08.14
  • Published : 2009.09.25
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Abstract

We present a method of using one-dimensional dielectric multilayer structures for designing terahertz frequency spreading filters. The interference of terahertz pulses in these structures composed of alternating weak and strong refractive materials allows design of well-separated THz frequency components within a modulation-limited THz spectral envelope. The design characteristics of these coarse THz combs are limited by the saturation effect and also by the deformation of the THz pulse time-traveling within the structure. The details of the designed THz waveform synthesis from these THz multilayer spectral filters are verified by experiments using time-domain terahertz pulsed spectroscopy.

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References

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