This paper describes implementation of optimization methods in physical optics modeling, similar to those used in geometrical lens design, but capable of treating the greater range of performance aspects which may be considered in a physical optics treatment. Physical optics, using a complex amplitude description of the optical beam and using Fourier diffraction propagation, provides a more accurate and powerful means of analysis than geometrical methods. Physical optics can more easily include nonlinear gain, unusual aperture shapes; a wider range of aberration types; mechanical and nonlinear optic phase conjugators; nonlinear optics effects such as stimulated Raman scattering, four-wave mixing, frequency doubling; optical resonators; etc.,.