Vibrational spectroscopy and imaging with non-resonant coherent anti-Stokes Raman scattering: Double stimulated Raman scattering scheme

Dae Sik Choi, Chang Ho Kim, Taegon Lee, Sanghee Nah, Hanju Rhee, Minhaeng Cho

Research output: Contribution to journalArticle

Abstract

We introduce a new coherent anti-Stokes Raman scattering (CARS) suppression scheme based on measuring a non-resonant CARS loss signal by three-beam (pump-Stokes-depletion) double stimulated Raman scattering (SRS) processes, which can be potentially of use for super-resolution Raman microscopy. In the converging configuration with employing both pump-depletion and Stokes-depletion SRS processes, we obtained approximately 94% suppression of non-resonant CARS signal, which is about 1.5 times more efficient than that with the parallel configuration with pump-Stokes and pump-depletion SRS processes. Such an enhanced suppression efficiency in the converging configuration results from a simultaneous loss of photons both in the pump and Stokes beams by double SRS processes, leading to an efficient suppression of the pump-Stokes-pump CARS signal. Based on the present method, we further propose two potential applications: (1) non-resonant background-free CARS imaging and (2) label-free super-resolution Raman imaging, and carry out simple numerical simulations to show their feasibility.

Original languageEnglish
Pages (from-to)23558-23575
Number of pages18
JournalOptics Express
Volume27
Issue number16
DOIs
Publication statusPublished - 2019 Aug 5

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Raman spectra
pumps
spectroscopy
depletion
retarding
configurations
microscopy
photons
simulation

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Vibrational spectroscopy and imaging with non-resonant coherent anti-Stokes Raman scattering : Double stimulated Raman scattering scheme. / Choi, Dae Sik; Kim, Chang Ho; Lee, Taegon; Nah, Sanghee; Rhee, Hanju; Cho, Minhaeng.

In: Optics Express, Vol. 27, No. 16, 05.08.2019, p. 23558-23575.

Research output: Contribution to journalArticle

Choi, Dae Sik ; Kim, Chang Ho ; Lee, Taegon ; Nah, Sanghee ; Rhee, Hanju ; Cho, Minhaeng. / Vibrational spectroscopy and imaging with non-resonant coherent anti-Stokes Raman scattering : Double stimulated Raman scattering scheme. In: Optics Express. 2019 ; Vol. 27, No. 16. pp. 23558-23575.
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