Spatially Variable Ripple and Groove Formation on Gallium Arsenide Using Linear, Radial, and Azimuthal Polarizations of Laser Beam
We demonstrated the linear, radial, and annular ripple formation on the surface of GaAs.The ESSIAC POWDER formation of linear ripples was optimized by the number of shots and the fluence of 30 ps, 532 nm pulses.The radial and annular nanoripples were produced under the ablation using doughnut-like beams possessing azimuthal and radial polarizations