Applied Physics Letters · 1977 · 124 citations · 1 references
Natural SciencesMaterials SciencePhysicsOpticsPhotonicsSurface ScienceLaser Material ProcessingLaser OpticsLaser PhysicsLaser Surface ProcessingLaser-plasma InteractionsSurface PhysicsLaser Surface AblationLaser Surface CleaningLaser Surface EtchingLaser Surface NanostructuringLaser Surface PatterningPolarizationWave FrontsWave Ripple Formation
When CO2-laser pulses of ∼50 ns duration and intensity of ∼100–500 MW/cm2 are incident upon NixP1−x surfaces in oxygen-containing atmospheres, distinctive ’’ripple’’ patterns are etched into the surfaces. The ripple wave fronts are normal to the E field and vary in spacing from ∼λlaser at normal incidence to ∼0.5λlaser for π polarization at grazing incidence.
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