The structure of the isochromatic fringe pattern in a two-dimensional photoelastic model is investigated with the phase diagram method of the theory of dynamic systems. Isochromatics are interpreted as phase paths (or level curves) of a Hamiltonian system. Possible singularities of the fringe pattern are analyzed.
© 2000 Optical Society of America
Hillar Aben and Leo Ainola, "Isochromatic fringes in photoelasticity," J. Opt. Soc. Am. A 17, 750-755 (2000)