Search

The formation of dotted and lined 2D nano- and microstructures on the surface of GaAs is demonstrated. These surface structures were devised using the vector 1030 nm, 250 fs laser beams of variable polarization (lineal, radial, and orthogonal) polarization. The annular and radial ripples were produced using radial and azimuthal polarizations of the laser pulses. Additionally, the formation of the grooves orthogonally placed with regard to the curved and radial ripples appeared with the increase of the number of laser shots on the same spot. This pattern was also observed when the laser beam was moved across the GaAs surface at a 50 kHz pulse repetition rate. This method of printing the unconventional 2D patterns allow for the formation of the complex surface structures. [ABSTRACT FROM AUTHOR]