Selective Suppression of Stimulated Raman Scattering with Another Competing Stimulated Raman Scattering

Doyeon Kim, Dae Sik Choi, Jiwoong Kwon, Sang-Hee Shim, Hanju Rhee, Minhaeng Cho

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

A three-beam femtosecond stimulated Raman scattering (SRS) scheme is formulated and demonstrated to simultaneously induce two different SRS processes associated with Raman-active modes in the same molecule. Two SR gains involving a common pump pulse are coupled and compete: As one of the Stokes beam intensities increases, the other SRS is selectively suppressed. We provide theoretical description and experimental evidence that the selective suppression behavior is due to the limited number of pump photons used for both of the two SRS processes when an intense depletion beam induces one SRS process. The maximum suppression efficiency was ∼60% with our experimental setup, where the SR gain of the ring breathing mode of benzene is the target SRS signal, which is allowed to compete with another SRS process, induced by an intense depletion beam, of the CH stretching mode. We anticipate a potential of this new switching-off concept in super-resolution label-free microscopy.

Original languageEnglish
Pages (from-to)6118-6123
Number of pages6
JournalJournal of Physical Chemistry Letters
Volume8
Issue number24
DOIs
Publication statusPublished - 2017 Dec 21

ASJC Scopus subject areas

  • Materials Science(all)

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