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

Kenji Katayama, Qing Shen, Akira Harata, Tsuguo Sawada

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10 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)2468-2470
Number of pages3
JournalApplied Physics Letters
Volume69
Issue number17
DOIs
Publication statusPublished - Oct 21 1996
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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