Unusual enhancement of transient reflecting grating signal under a surface plasmon resonance condition

Kenji Katayama, Qing Shen, Akira Harata, Tsuguo Sawada

研究成果: Contribution to journalArticle査読

10 被引用数 (Scopus)

抄録

Subnanosecond time-resolved transient reflecting grating (TRG) measurements were carried out under resonance conditions of surface plasmon (SP) with a Kretschmann configuration using a 40-nm-thick gold film deposited on a hemicylindrical prism. The TRG was generated and detected with two pump beams and with one probe beam incident from the prism side, the angles of which for incidence and polarization were changed. When the pump beams resonantly excited SPs, the TRG signal amplitude was enhanced as expected. An unusual enhancement was observed when the probe beam excited SPs, i.e., the TRG signal amplitude was also enhanced strongly although reflecting diffraction was probed under the less reflective condition. This enhancement was accompanied by a transient wave form change. The mechanism of these phenomena is discussed.

本文言語英語
ページ(範囲)2468-2470
ページ数3
ジャーナルApplied Physics Letters
69
17
DOI
出版ステータス出版済み - 10 21 1996
外部発表はい

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(その他)

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