Applied Physics Letters · 1977 · 123 citations · 1 references
Optical MaterialsEngineeringLaser ScienceLaser-plasma InteractionLaser ApplicationsLaser PhysicsHigh-power LasersLaser OpticsOptical PropertiesOptical DiagnosticsRipple Wave FrontsPhysicsLaser Processing TechnologyLaser-assisted DepositionAdvanced Laser Processingπ PolarizationCo2-laser PulsesLaser PhotochemistryNatural SciencesSpectroscopyApplied PhysicsGas LasersLaser-surface InteractionsLaser-solid Interactions
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.
1