Determination of refractive indices and absorption coefficients of highly purified N-benzyl-2-methyl-4-nitroaniline crystal in terahertz frequency regime

Kazuyoshi Kuroyanagi, Masazumi Fujiwara, Hideki Hashimoto, Hironori Takahashi, Shin Ichiro Aoshima, Yutaka Tsuchiya

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

We have measured the refractive index and absorption coefficient of the N-benzyl-2-methyl-4-nitroaniline crystal using terahertz time-domain spectroscopy. We found that the refractive index had a value between 1.5 and 1.9 in the 〈100〉 direction and between 1.9 and 2.3 in the 〈100〉 direction. We also found that there were resonances at 1.6 and 3.2 THz in the 〈100〉 direction, and 1.3, 2.2, and 3.6 THz in the 〈001〉 direction within the observed spectral range between 0 and 5 THz. A Lorentz-type oscillator model is applicable to explain our experimental observations.

Original languageEnglish
Pages (from-to)L761-L764
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume45
Issue number29-32
DOIs
Publication statusPublished - Aug 11 2006
Externally publishedYes

Keywords

  • Absorption coefficient
  • Optical nonlinearity
  • Organic crystal
  • Refractive index
  • Terahertz
  • Terahertz time-domain spectroscopy
  • THz

ASJC Scopus subject areas

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

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