Duty ratio dependence of difference frequency generation for millimeter-terahertz wave spectra using periodically poled lithium niobate

Koji Suizu, Takayuki Shibuya, Shigehiro Nagano, Keiichi Edamatsu, Hiromasa Ito, Kodo Kawase

Research output: Contribution to journalArticle

Abstract

We demonstrate difference frequency generation of millimeter wave and terahertz (THz) radiation using periodically poled lithium niobate (PPLN). We fabricated PPLN crystals with a 286-μ m period, and with 50.0 and 33.3% duty ratio. Millimeter and THz waves were successfully generated, and higher-order quasi-phase matching (QPM) modes were obtained. We investigated behaviors of the radiation and the influence of the duty cycle on the spectrum using numerical simulation. Higher-order QPM modes could be generated with the proper duty cycle. The conversion efficiency of higher-order modes was controllable by varying the duty cycle of the QPM device.

Original languageEnglish
Article number072301
JournalApplied Physics Express
Volume2
Issue number7
DOIs
Publication statusPublished - 2009 Jul 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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