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Updated: Jun 17, 2026

Differential Imaging of Biological Structures with Doubly-resonant Coherent Anti-stokes Raman Scattering (CARS)
Published on: October 17, 2010
Coherent anti-Stokes Raman scattering of two-phonon complexes in diamond
Takashi Kuroda1, Peter A Zhokhov, Kenji Watanabe
1National Institute for Materials Science, 1 Namiki, Tsukuba 305-0044, Japan.
Abstract:
Coherent anti-Stokes Raman scattering (CARS) associated with the second-order Raman process has been confirmed in diamond. Frequency dependence of CARS was analyzed using two-color synchronously-generated picosecond pulses. Resonance enhancement of chi((3)) was observed at an energy shift corresponding to the overtone Sigma branch (K point) phonon, as well as the fundamental Raman-active Gamma((25+)) phonon. The excitation spectrum of CARS at the two-phonon resonance region showed dispersive dependence, reflecting the interference of resonant CARS and nonresonant four-wave mixing scattering.
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