Beam shaping by superposition of fundamental mode Gaussian beam

A method is proposed which makes it possible for beam shaping by superposition of fundamental mode Gaussian beams with different waist parameters. This study includes two topics: 1) Superposition of co-axial fundamental mode Gaussian beams to form flat-topped light beams, and 2) Superposition of tilted fundamental mode Gaussian beams to form Bessel-Gaussian beams.