In this paper,simulation experiments of two-dimensional flat rectangular ultrasound array and two-dimensional annular array were conducted for evaluating sound-beam control techniques,such as sound-beam focusing,sound-beam steering,aperture apodization,etc.

Objective:To study the influence on monkey s generative physiology after terminating early pregnancy by focused ultrasound beams (FUB).

By applying the numerical simulation technology,it makes the optimization process for light beam heating parameters more efficient and economic.

The technology of acquiring precise modified layer on construction material surface by light beam cladding was investigated and its effect on cladding layer quality was revealed.

In simulation of focused beam propagation with arbitrary focal length, the traditional beam propagation algorithm based on Fast Fourier Transform will fail to give right results due to the limitation of the sampling theorem.

Optimum parameters for focusing of optical beams in self-defocusing nonlinear media;

A discussion is given about the focusing of optical beams due to the cross phase modulation in three dimensional self defocusing nonlinear media.

The preliminary understanding is obtained about the focusing of optical beams induced by cross phase modulation in three dimensional self defocusing nonlinear media.