THz transmittance measurements of nucleobases and related molecules in the 0.4- to 5.8-THz region using a GaP THz wave generator

Jun Ichi Nishizawa, Tetsuo Sasaki, Ken Suto, Tadao Tanabe, Kyosuke Saito, Tetsuya Yamada, Tomoyuki Kimura

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

An automatic measurement system for terahertz (THz) transmission spectroscopy based on difference-frequency generation (DFG) of widely tunable coherent THz waves via excitation of a phonon-polariton mode in GaP was constructed and improved to give it a wider frequency measurement range and four times greater S/N ratio by using the double-beam method. In this paper, we present spectroscopic measurements of nucleobases, nucleosides, deoxynucleosides, and nucleotides, all of which are the components of RNA and DNA molecules, in the range of 0.4-5.8 THz in order to compare their characteristic features in the wider terahertz frequency region.

Original languageEnglish
Pages (from-to)229-239
Number of pages11
JournalOptics Communications
Volume246
Issue number1-3
DOIs
Publication statusPublished - 2005 Feb 1
Externally publishedYes

Keywords

  • DNA
  • Frequency-tunable coherent terahertz wave
  • GaP
  • Phonon-polariton
  • RNA
  • Terahertz spectrometer

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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