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.
© 2003 Optical Society of America
(190.5650) Nonlinear optics : Raman effect
(300.6450) Spectroscopy : Spectroscopy, Raman
(300.6500) Spectroscopy : Spectroscopy, time-resolved
(320.7100) Ultrafast optics : Ultrafast measurements
(320.7150) Ultrafast optics : Ultrafast spectroscopy
Hideaki Kano and Hiro-o Hamaguchi, "Characterization of a supercontinuum generated from a photonic crystal fiber and its application to coherent Raman spectroscopy," Opt. Lett. 28, 2360-2362 (2003)