We demonstrate time-resolved coherent anti-Stokes Raman scattering (CARS) by using a frequency-tunable femtosecond soliton output of a silica photonic-crystal fiber (PCF) as a Stokes field. This approach allows quantum beats originating from two close Raman modes to be resolved in the time-domain CARS response. The nonresonant CARS background is efficiently suppressed by introducing a delay time between the probe pulse and the pump–Stokes pulse dyad, suggesting a convenient fiber-optic format for the Stokes source in time–resolved CARS and allowing sensitivity improvement in PCF-based CARS spectroscopes and microscopes.
© 2006 Optical Society of America
Original Manuscript: February 21, 2006
Manuscript Accepted: March 27, 2006
Published: July 10, 2006
Vol. 1, Iss. 9 Virtual Journal for Biomedical Optics
Dmitrii A. Sidorov-Biryukov, Evgenii E. Serebryannikov, and Aleksei M. Zheltikov, "Time-resolved coherent anti-Stokes Raman scattering with a femtosecond soliton output of a photonic-crystal fiber," Opt. Lett. 31, 2323-2325 (2006)