Frequency-tunable terahertz wave generation via excitation of phonon-polaritons in GaP

Tadao Tanabe, Ken Suto, Jun Ichi Nishizawa, Kyosuke Saito, Tomoyuki Kimura

Research output: Contribution to journalArticlepeer-review

70 Citations (Scopus)


High-power, wide-frequency-tunable terahertz waves were generated based on difference-frequency generation in GaP crystals with small-angle noncollinear phase matching. The tunable frequency range was as wide as 0.5-7 THz, and the peak power remained high, near 100 mW, over most of the frequency region. The tuning properties were well described by the dispersion relationship for the phonon-polariton mode of GaP up to 6 THz. We measured the spectra of crystal polyethylene and crystal quartz with high resolution using this THz-wave source.

Original languageEnglish
Pages (from-to)953-957
Number of pages5
JournalJournal of Physics D: Applied Physics
Issue number8
Publication statusPublished - 2003 Apr 21
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films


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