Simultaneous measurement of real and imaginary parts of nonlinear susceptibility for the verification of the Kramers-Kronig relations in femtosecond spectroscopy

Hideaki Kano, Takayoshi Kobayashi

研究成果: Contribution to journalArticle査読

18 被引用数 (Scopus)

抄録

Simultaneous measurement of continuous spectra of real and imaginary parts of complex nonlinear optical susceptibility was performed for porphyrin J-aggregates with sharp absorption peaks using a femtosecond Sagnac interferometer. A nonresonant component (χNR(3)) due to a solvent and a resonant component (χNR(3)) due to the porphyrin J-aggregates are observed. The real and imaginary parts are compared using the Kramers-Kronig (KK) relations, which are valid for linear optical susceptibility. It is shown that χR(3) satisfies the KK relations at all delay times. On the other hand, (χNR(3)) does not satisfy the KK relations at zero delay time. The validity of the KK relations, which have been reported in previous papers by our group, are verified for the first time experimentally using continuous spectra.

本文言語英語
ページ(範囲)133-139
ページ数7
ジャーナルOptics Communications
178
1
DOI
出版ステータス出版済み - 5 1 2000
外部発表はい

All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 原子分子物理学および光学
  • 物理化学および理論化学
  • 電子工学および電気工学

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