Creating of hollow-beam using closed nonlinear Michelson interferometer

In this paper, a configuration of closed nonlinear Michelson interferometer is proposed. On the basis of the principle of propagation and interference of the light field, we have derived the relationship between the output intensity and the input intensity. By numerical investigation, we have received the input Gaussian beam reconstructed into a Gaussian beam, and hollow-beam forms such as hollow-Gaussian, Ring-Gaussian or Multi-ring Gaussian. The results obtained shows that an input Gaussian beam is possible to apply for trapping microparticles with a refractive index smaller than that of the medium when using a closed nonlinear interferometer. Furthermore, this configuration has the advantage of using only one input beam instead of irradiating two Gaussian beams on the Fabry–Perot nonlinear interferometer.