Continuously Tunable THz-Wave Generation from GaP Crystal by Difference Frequency Mixing with a Dual-Wavelength KTP-OPO

Abstract

Tunable terahertz (THz)-wave generation has been achieved by difference frequency generation (DFG) in a GaP crystal, with a KTiOPO4 (KTP) optical parametric oscillator (OPO). We have developed a dual signal-wave OPO with two KTP crystals of phi = 55 degrees to oscillate wavelengths from 980 nm to 990 nm, corresponding to the phase matching wavelength for DFG in GaP. Continuously tunable THz-waves were successfully generated in the 0.5 - 2.0 THz region, with the angle-tuning of the KTP crystal in the OPO cavity. The maximum power of 1.4 mW at the peak was achieved at 1.4 THz.

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Document Details

Document Type
Technical Report
Publication Date
Sep 29, 2000
Accession Number
ADP011780

Entities

People

  • Hiromasa Ito
  • Jun-ichi Shikata
  • Tetsuo Tanikuchi

Organizations

  • Tohoku University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Advanced Materials
  • Difference Frequency
  • Dye Lasers
  • Electronics
  • Frequency
  • Infrared Radiation
  • Laser Beams
  • Lasers
  • Light Sources
  • Liquid Dye Lasers
  • Materials
  • Nonlinear Optics
  • Oscillators
  • Polaritons
  • Refractive Index
  • Repetition Rate
  • Terahertz Radiation

Fields of Study

  • Physics

Readers

  • Information Retrieval
  • Optical Physics and Photonics.