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

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Title
Selective Suppression of Stimulated Raman Scattering with Another Competing Stimulated Raman Scattering
Author(s)
Doyeon Kim; Dae Sik Choi; Jiwoong Kwon; Sang-Hee Shim; Hanju Rhee; Minhaeng Cho
Publication Date
2017-12
Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS, v.8, no.24, pp.6118 - 6123
Publisher
AMERICAN CHEMICAL SOCIETY
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. © 2017 American Chemical Society
URI
https://pr.ibs.re.kr/handle/8788114/4129
ISSN
1948-7185
Appears in Collections:
Center for Molecular Spectroscopy and Dynamics(분자 분광학 및 동력학 연구단) > Journal Papers (저널논문)
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