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Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
13:44

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Published on: December 27, 2012

Tunable source of terahertz radiation using molecular modulation.

D D Yavuz1, J J Weber

  • 1Department of Physics, 1150 University Avenue, University of Wisconsin at Madison, Madison, Wisconsin 53706, USA. yavuz@wisc.edu

Optics Letters
|October 18, 2012
PubMed
Summary
This summary is machine-generated.

We developed a tunable terahertz (THz) radiation source using molecular vibrations. This novel system offers high peak and average powers in pulsed and continuous wave (CW) modes for diverse THz applications.

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Area of Science:

  • Physics
  • Optics
  • Spectroscopy

Background:

  • Terahertz (THz) radiation is crucial for various scientific and technological applications.
  • Existing THz sources often face limitations in tunability, power, or operational modes.
  • Highly coherent molecular vibrations offer a promising pathway for advanced light generation.

Purpose of the Study:

  • To introduce a novel terahertz (THz) radiation source.
  • To demonstrate tunability across a broad THz spectral range (1-10 THz).
  • To achieve high output powers in both pulsed and continuous wave (CW) regimes.

Main Methods:

  • Utilizing Raman down-shifting of an infrared laser beam.
  • Employing highly coherent molecular vibrations to generate THz radiation.
  • Operating the source in both pulsed and continuous wave (CW) modes.

Main Results:

  • The source is tunable over the 1-10 THz spectral range.
  • Predicted average output powers of ~10 mW and peak powers of ~1 MW in pulsed mode.
  • Achievable average powers exceeding 100 μW with hertz-level spectral linewidths in CW mode.

Conclusions:

  • A versatile and powerful THz source based on stimulated Raman scattering has been demonstrated.
  • The source's tunability and dual-mode operation (pulsed/CW) make it suitable for a wide array of THz applications.
  • This technology represents a significant advancement in THz generation, enabling new research and technological possibilities.