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

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Title
Vibrational spectroscopy and imaging with non-resonant coherent anti-Stokes Raman scattering: Double stimulated Raman scattering scheme
Author(s)
Choi, Dae Sik; Kim Chang Ho; Lee Taegon; Nah, Sanghee; Rhee, Hanju; Minhaeng Cho
Publication Date
2019-08
Journal
OPTICS EXPRESS, v.27, no.16, pp.23558 - 23575
Publisher
OPTICAL SOC AMER
Abstract
© 2019 Optical Society of America under the terms of the OSA Open Access Publishing AgreementWe 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
URI
https://pr.ibs.re.kr/handle/8788114/6126
ISSN
1094-4087
Appears in Collections:
Center for Molecular Spectroscopy and Dynamics(분자 분광학 및 동력학 연구단) > Journal Papers (저널논문)
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