Laser-induced periodic surface structures on fused silica upon cross-polarized two-color double-fs-pulse irradiation

- LIPSS formation on fused silica is studied upon cross-polarized two-color (400 and 800 nm) double-fs-pulse irradiation.
- LIPSS orientation follows the polarization of the first pulse.
- LIPSS periods are determined by the wavelength of the first pulse.
- LIPSS area is increased for temporally overlapping pulses due to nonlinear absorption.