Characterization of a supercontinuum generated from a photonic crystal fiber and its application to coherent Raman spectroscopy.
The temporal and spectral profiles of supercontinuum radiation generated from a photonic crystal fiber are evaluated with a polarization-gate frequency-resolved optical gating technique. The supercontinuum is then applied to coherent inverse Raman spectroscopy. A stimulated Raman signal of cyclohexane is observed as an induced absorption signal with an instantaneous response. The Raman signal has a peak at a slight negative delay time, which is explained by perturbed Raman-induced coherence.
Kano
Hideaki
H
Department of Chemistry, School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan. hkano@chem.s.u-tokyo.ac.jp
Hamaguchi
Hiro-o
HO