Single-beam CARS spectroscopy using a soliton Stokes pulse and a spectrally-compressed pump pulse from a PCF

In this paper, we demonstrate a novel setup for single oscillator CARS spectroscopy using a single beam, where a Stokes pulse and a pump pulse are generated by the combination of a pulse shaper and a photonic crystal fiber (PCF). In this setup, two pulses, one for generating a wavelength-tunable fundamental soliton pulse, and the other for generating a narrowband pump pulse, are shaped by a pulse shaper and are inputted in a PCF.