A new method is proposed to solve the phase problem of the optical coherence theory. The method consists of generating a phase-conjugate wave using a suitable nonlinear process and superimposing it with the original wavefield. We discuss how the method could be applied to obtain the intensity distribution across an incoherent light source.
© 1978 Optical Society of America
G. P. Agrawal, "Phase determination by conjugate wave-front generation," J. Opt. Soc. Am. 68, 1135-1136 (1978)