Enhanced and broadened SRS spectra of toluene mixed with chloroform in liquid-core fiber

Abstract

Stimulated Raman scattering of toluene and its mixture with chloroform is studied in liquid-core optical fiber. The results show a remarkably broadened Raman line of the mixture from about 630 nm to 650 nm by a pumping wavelength at 532 nm, which is assigned to the interaction of CH vibrations of the two liquids. The results suggest that interactions between adjacent vibrations can produce strong and wide Raman spectra in liquid-core fiber which may prove a new simple way for supercontinuum generation.