Theory of surface thermal lens signal in optical coating with cw modulated top-hat beam excitation;

The spectral propagation equation of flat-topped beams propagating through atmospheric turbulence is derived by using the quadratic approximation of the Rytov s phase structure function.

The coherent combination of multi-Hermite-Gaussian beams is proposed to describe the flat-topped beams.

Propagation of flat-topped light beams passing through ABCD optical systems;

Making use of the new model of falt-topped light beams proposed by Li recently,the analytical expressions of the M~2-factor and the field distribution of flat-topped light beams passing through a paraxial ABCD optical system have been derived,respectively.

Using axicon-based optical devices can realize such transormations as Gauss beam into a diffraction-free Bessel beam,solid beam and annular beam converting eachother.

A new synthesis method for synthesizing on-axis flat-topped beams by using a defocusing telescope system;