Self-similarity in transient stimulated Raman scattering in CO2-filled hollow-core fiber

We demonstrate experimentally the complex and extensive spectro-temporal dynamics of stimulated Raman scattering in C O 2 -filled hollow-core photonic crystal fiber, pumped by a single infrared microchip laser; namely, the cascading transient Raman process and self-similar behaviors in the regime of higher-order Stokes wave generation. Our measurements are in good agreement with the numerical simulations based on the nonlinear Schrödinger equation.