Abstract

We demonstrated Fourier synthesis of a new type of multiple coherent anti-Stokes Raman scatterings in $\mathrm{K}\mathrm{Ta}{\mathrm{O}}_3$ crystal. The signals with a wavelength range of $500–750\mathrm{nm}$ were generated by two femtosecond pulses whose frequency difference was set to be a two-phonon Raman frequency. Angle dispersion of the signals was compensated into one white-continuum beam by spherical mirrors and a prism. The spectral phase, measured by spectral phase interferometry for direct electric-field reconstruction, was compensated for by carefully aligning the angle and the position of the optical components so that $13\mathrm{fs}$ isolated pulses were generated. This result shows the robustness of our scheme to produce ultrashort optical pulses.

© 2009 Optical Society of America

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